i found these on ebay.they are t tops off of a 90 GTA.these should fit my 91 RS right?i think by 90 they were all converted over to the pin lock.i emailed the guy to ask him if they are the pin type.thanks for any help!

Technically the size and latch will all be the same... BUT... somewhere in 1991 GM changed the weatherstripping design so they may not mate up correctly with the weatherstripping on your car.