Also the other issue is the Diff ratio mentioned on the door tag. Going by information I can find there is no '7' for a 66. Can you assist?
Looking at the rivets holding on the door data plate, the plate is most likely a reproduction, and a poor one at that looking at the actual stamped letters. Is that a clear cover over the plate?
My recommendations (corrections in bold type):
Body - 63A (Hardtop, standard bucket seats); Color - 8 (Springtime Yellow); Interior - 26 (Black Vinyl); Date 18K
(the date of my "K" Fastback, as close as any scheduled date);
D.S.O. 72 (San Jose); Axle - 1
(standard for "A" code engines); Transmission - 6 (a C4 three speed automatic).
Marti Auto http://www.martiauto.com/
would be a good place to get a new door data plate.
Even more critical, the sheet metal around the door latch is cracked. There are replacement screws with a large washer for short term repairs, but I strongly recommend you go to a local body shop and have the cracks welded, the welds ground down, primed and painted. The window, the rear window track and door latching mechanism must be removed to do this. Check the other door frame as well.