MS, I thought you lived in the area?
 

For title purposes, the fender VIN overrules the door tag.  I would get with your DMV to get it straightened out.  You don’t want heirs getting trapped someday if it ever gets ugly.

Sent you a PM.  Other than that I have to believe that there must be at least one competent machine shop in your area that could do what you need to have done.

Have always been curious how it happened.  Have asked at car shows, one answer was ford was selling so many mustangs that they used whatever bodies they had available.  Don’t know if that was true or not.
Have 4 old fords 66 fastback mustang, 67 GT Fairlane, 65 galaxie, 66 f100, none are even close to a show car.  Just decent drivers, but have enjoyed working on.  My age is getting so it’s not near the fun it use to be, but keep trying to turn a wrench ever so often.

Fender is on both sides reads 6F09T69441
Door reads 6F09A69441

Does the VIN on the inner fender say 6Txxxxxxxx?
Or does it say 6xxxTxxxxx?
Or does it say 6xxxAxxxxx?

T in the second position is the code for the Metuchen, NJ assembly plant. T in the fifth position is the code for a 200 6 cylinder engine. A in the fifth position is the code for a 289 4V engine.

Mine is a 66 and I have Hooker super comp long tube headers on it.

[/b]That door I believe is original, have owned it 30 yrs or more, talked to the guy that was 2nd owner who drove it to school.  Was sitting in a field with workout 302 with the top loader in trunk. Brought it when mustangs were not that high and I don’t think previous owner would went to the trouble to Chang vin tag on door as I bought it as not more as junk.  just wondering if any other explanation ?  Not trying to sell as I had new quarters new fenders and floor pans, 351W , T5, electric steering, unisteer rack, so one of my grand kids will receive.  Taken a long time to get where it is, only thing left is Shelby drop and Daze adjustable struts.  Wish I could post a picture, don’t see any place to post.  If the door vin is fake then how was a titlle produced with A code.  Is it possible for a T code car and a A code car to have the same serial numbers if the door was changed.

My 65 coupe has had the following combos:

195/75/14 = 25.5” (C4 w/2.80 gears)

215/60/14 = 24.1” (C4  w/2.80 gears)

235/60/14 = 25.1” (C4 w/2.80 gears and C4 w/3.25 gears)

235/40/18 = 25.4” (T5 w/3.25 gears)

BTW...
235/45/17 = 25.3”

Keep in mind that these are according to stated tire size not real tire size.

Each manufacturer is a little different.

Kinda like shoes.

The fender would be correct number regardless of door or title paperwork.

Door tag could easily be reproduced to say anything you want.
And titles get screwed up all of the time even for newer cars.

Anything beyond that I would say is fraud to insurance company and potential future buyer.

Have a 66 mustang with a vin on fender with a T code, door has A code.  The serial number is the same on both locations.  The title is A code.  I have owned since late 80,s.  Has 5 lugs,  also has 9 inch rear, with necked down axle ends.  I know the rear is not original as it is 3:50.  Is it possible for that someone could find a door with the same serial number but with A code.  The only difference in both vin locations is T versus A.  Would post pictures if knew how.

Thanks,
Steele

My old 1970 Boss 302 had 3.50 gears from the factory.  I drove it all over the place, highway cruising and stoplight to stoplight.   Had never heard of OVERDRIVE transmissions back then.  It just ran how it ran.  That engine WAS made for more rpm, but I’m sure a two barrel 289 will run 3,500 rpm all day long without any detrimental effects. It is what it is, and if the higher rpm doesn’t bother you, it won’t hurt the car.  It WILL get worse gas mileage, but so what?  It WILL have more road noise, but so what?   If that stuff bothers you, there are cures available, for a price.