It's for the T-56.
http://www.thegearbox.org/catalog/it...17/3503850.htm
Just bought an 95 z i'm looking into redoing. Anybody use this kit any chance?

 

never really wanted to deal with replacing all of the syncros, bearings, seals, and other goodies in my t56 when i had Intermountain Trans rebuild it. especially when it was around a thousand bucks and came with a 50,000 mile guarantee. However if you are going to do it, i would research the internals a bit and find a shop near you who has done it before so they can give you any tips they may have, plus they are close enough that if you do screw up you can take it to them.