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8/10/2020 10:31 AM  #1

Seat Belt hole on Door Sill Plate

1966 Mustang Coupe

Anyone know of a good way of locating the seat belt hole on the door sill plate?  Should I drill a hole before I install the sill plate or after?  How could I locate it accurately to avoid drilling a big hole or messing it up.  I want to make it look as clean as possible obviously.  I was thinking of removing the seatbelt, completely installing the sill plate and then trying to mark the hole location somehow.   These things need a little bit of massaging and bending to sit right so I mark the hole before hand I'm afraid it may be way off.


8/10/2020 7:26 PM  #2

Re: Seat Belt hole on Door Sill Plate

IF you mount the seat belt  'thingy' in the door sill you gonna close the door??!
(Unless you remove the doors like a CJ-5!)

Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8

8/12/2020 2:28 PM  #3

Re: Seat Belt hole on Door Sill Plate

I'm also confused, the seat bolt hole is on the vertical portion on the interior side of the rocker panel.  The sill plate should not interfere with the seat bolt attaching point at all.

65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear,  R&C Front End.

8/13/2020 9:12 AM  #4

Re: Seat Belt hole on Door Sill Plate

Make a 3” square plate out of 10 ga steel.  Drill 1/2” hole in the center. Weld a 1/2” nut onto the plate so a bolt going through the hole engages the nut.

Drill 1” hole in the side of the vertical rocker panel. Weld the plate to the rocker with the nut fitting through the 1” hole.

Or something like that...

Money you enjoy wasting is NOT wasted money... unless your wife finds out.

Board footera

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