I had my clutch take a dump, it took out my pressure plate and flywheel. So, I need a whole kit. However, when I am looking at the parts stores I am seeing a couple clutch kits.

Diaphragm type Disc outside diameter 9 1/8", spline inside diameter 1", spline count 14; Contains: Premium friction, O.E. manufactured clutch components; Kit includes: Clutch, disc, release bearing, alignment tool, pilot bearing, spline lube ---- for $89

Diaphragm type Disc outside diameter 9 11/16", disc inside diameter spline 1", spline count 14 ---- for $129

Any idea which one really is the proper one? I also noticed when checking what they also fit, the 129 one fits 82-83 Camaro and 85-89 Firebird (wtf?) and the other is for 83-92 Camaro/Firebird....

Which is the proper one?

Thanks,
Douglas