Hi Proline, I would think that by looking up the part by application. If that did not work then look up by trany #, I think the # is on the passenger side of the trany case. If all that doesn't work at the local chevy parts counter then maybe one of the NCRS books will solve the problem. As for which Mfg. to get, I would think any would do for a stock application. The important part is to get all the wear items like the pilot bushing, throw-out bearing, fork ball & fork, and to have the fly wheel re-surfaced(very important), fork boot, check trany mount for wear, clutch linkage springs and actuator rods, and re-align the shift linkage and clean & lube the shifter head. All this is important if this the first time in a long time between clutch R&R's. There is a Mfg that has a unique lever system on their preassure plate that makes the pedel effort lighter without giving up clamping preassure, Hayes I think. Good luck, tt72
