See MustangSteve.com
If you have 15” wheels, the Cobra rear disc brakes will fit. There is a company on ebay selling reproduction cobra calipers cheaper new than you can find used.
If you have bigger wheels, the 2005-2014 rear GT brake kit is simpler to hook up. You can use the original parking brake cables with those, and the brakes are available in salvage yards for cheap.

Tha ks MS and TKO, but this is part of my issue taking this route.

I don't have any part numbers or reference information for parts.

Essentially I wouldn't know which brackets to buy for even the COBRA setup.
Nor do I know which lines to get, bolts, rotors etc.

I've been scouring forums and websites and can't find anyone who has posted a solid list of parts/part numbers and/or links.

So I don't really care if it's Cobra or Versaillis or Crown Vic, I'm just looking for clear direction.

If I bought the Cobra Conversion brackets from MS website, I have no clue what else to buy.

The Right Stuff sells a bargain product but those calipers look chincy.

Last edited by M1Mustang69 (2/22/2025 12:23 PM)

TKOPerformance wrote:

I used Cobra brakes on my '89 and didn't bother trying to find used originals.  You can just eat the core cost if buying reman, or there are a bunch of options for new.  I'd check Rock Auto as well.  Some will say Cobra, other's won't.  The rear calipers IIRC are not any different than the GT calipers; its the mounting bracket that differs due to the Cobra using vented and therefore thicker rear rotors.  If you find a screaming deal on GT calipers the brackets are all over eBay (or at least they used to be) for a reasonable price. 

Cobra rear calipers do not have lettering. Cobra and non-cobra calipers are indeed different.  I designed the kit so you can bank on what I tell you.
Cobra-RSM brackets are required from MustangSteve.
94-2004 cobra rear calipers and brackets and rotors are required.

Steve provided the link you needed above.  All of the information you need is found here:

https://mustangsteve.com/products/cobra-rsm

https://cdn.shopify.com/s/files/1/0847/8392/3488/files/04._INSTRUCTIONS_COBRA-RSM_COBRA-RLG.pdf?v=1706238996

All of the parts can be found at Rockauto.com or other site like Summit.  I trust these over many Ebay sites.  

If the instructions and parts list provided (which includes model years), contact the MustangSteve crew https://mustangsteve.com/pages/contact

So, to further clarify - order the bracket kit from MustangSteve.com, use the instructions to determine the parts you'll need, order the parts, and put it together.

M1Mustang69 – I have a used 1994/95 Cobra SVT Master Cylinder (in good condition) for 4-wheel non-power disc brakes.  If you are interested, send me a PM with your email.

Stellar fab work Rudi!

TKOPerformance wrote:

MS wrote:

TKOPerformance wrote:

I used Cobra brakes on my '89 and didn't bother trying to find used originals.  You can just eat the core cost if buying reman, or there are a bunch of options for new.  I'd check Rock Auto as well.  Some will say Cobra, other's won't.  The rear calipers IIRC are not any different than the GT calipers; its the mounting bracket that differs due to the Cobra using vented and therefore thicker rear rotors.  If you find a screaming deal on GT calipers the brackets are all over eBay (or at least they used to be) for a reasonable price. 

Cobra rear calipers do not have lettering. Cobra and non-cobra calipers are indeed different. I designed the kit so you can bank on what I tell you.
Cobra-RSM brackets are required from MustangSteve.
94-2004 cobra rear calipers and brackets and rotors are required.

If there is a difference in the rear calipers I'd be interested to know what it is.  If you look at the listings on Rock Auto the only time the model is differentiated is when the caliper comes with the mounting bracket.  If you Google the issue I've yet to see anyone claim a difference in the caliper on any other forum.  I have GT calipers on Cobra brackets on Cobra specific axle brackets on my '89 and everything works.  The difference I noticed between the Cobra and GT brackets is that the opening in the Cobra brackets are wider (vented Cobra rotors are thicker), and that the Cobra brackets move the caliper farther away from the axle housing because the Cobra rotors are larger in diameter.  The only other difference between the two setups is that the Cobra pads are different (thinner) to allow for the thicker rotor, so if you buy a loaded caliper the model it fits will also be differentiated. 
 

Typically when you buy a caliper you buy the brackets attached, and the brackets are the difference, as you described.  And the pads are thinner on cobra as stated.
I would have to go back and check my archived caliper research to tell what difference there is in the caliper itself.

Thanks, Bob. I could not find my picture shoeing the difference.

I looked at modifying the brackets but ultimately decided that rather than play cut and try a half dozen times I'd just buy the right ones.  When I did my conversion years ago it was often claimed that the calipers were the same, with no mention of the bracket being different.  I saved a decent chunk of change buying GT calipers instead of Cobra calipers, only to find out that the brackets wouldn't work and I ended up having to source the right brackets.  What I saved I almost certainly spent on the brackets.  So, if you say already had the brackets and needed to replace a failed caliper you could just use the GT ones and possibly save the premium that comes with the word "Cobra".  If buying new just get the Cobra ones from the jump and avoid the issue. 

GPatrick wrote:

Steve provided the link you needed above.  All of the information you need is found here:

https://mustangsteve.com/products/cobra-rsm

https://cdn.shopify.com/s/files/1/0847/8392/3488/files/04._INSTRUCTIONS_COBRA-RSM_COBRA-RLG.pdf?v=1706238996

All of the parts can be found at Rockauto.com or other site like Summit.  I trust these over many Ebay sites.  

If the instructions and parts list provided (which includes model years), contact the MustangSteve crew https://mustangsteve.com/pages/contact

So, to further clarify - order the bracket kit from MustangSteve.com, use the instructions to determine the parts you'll need, order the parts, and put it together.

OK, firstly I thank everyone who has taken the time to try and help/give insight........but I feel like im not much farther ahead.
Either I am Dense, or I'm missing something:
from the start I had expressed a want/need for clear parts list/references to specific items if Piecing Together, or if getting a kit, what I may Require to Procure outside of any kit.

What does the Listing Pasted here include for $300US?  I did read the installation instructions, its unclear why I need to replace the Axel Bearing if its still good?

Should I just get a kit like this, or are they total trash? 
Ford 8" or 9" small bearing rear disc brake conversion with parking brakes | eBay
or this
1968 FORD MUSTANG The Right Stuff ZDCRDM2 The Right Stuff Rear Disc Brake Conversion Kits | Summit Racing
?

also, I have access to all this (94-04 Cobra) 

Do those Brackets Work? 

lastly, does anyone have a Full Versaillies parts list?

You have to remove the axle bearings to install the MustangSteve brackets. That is because the brackets are designed to give a light bearing crush 360 degrees around the bearing. The ones that simply bolt on using the old bearing will have a bearing with partial compression around the perimeter. Made cheap and easy to install, not to be the best design.
The Mustangsteve stuff uses all Ford original parts on wear items so you can always find a replacement in twenty years.
If your desire is cheap, easy to install and a kit with all the junk parts you need, the MustangSteve  stuff is probably not going to be your first choice.  But, it will wind ip being your second, more permanent choice.

Everything I have seen from RIGHT STUFF was not.  I do not know what they are selling.

The m-s bracket set is just brackets and required bolts, with instructions.

You will need original type axle bearings.

The MustangSteve stuff is more effort to install than most other kits. The trade-off is you won’t have screw with it forever once the “easy install” is over with.  You spend the effort to install it and then you are done, and it works like factory stuff, because thst is what it is.