ps why did you say that A39 and A85 do not exist?
The codes may have been used elsewhere in GM, just not on Camaro and not for those options.
For the record Custom Deluxe Belts [req on Z11] were YA1, Front Shoulder Belts were YA3.
....because I spent two hours going through the CRG POP options sheet... and found A39 and A85. The 8 page printout did not make it clear that they were 67-8 only. In fact for the YA1 and YA3 I am referred back to A39 and A85.... so you can see my confusion.
I deciphered my Protect-O-plate. Numbers all match my drive line.... the 1& 3 on positions ABCD below the Rear Axle Code are offset.... so it can be any of N40,J50,Any Radio or J52 which the car has all of anyway (PS,PB,Radio,Discs)
So far it looks like I am missing an underhood lamp and have the wrong antenna. (and a crappy window sticker?)