Borg Warner Super T10 Chevy Corvette 4 Spd W/ Overdrive 1984-1988 BW Super T10 DNE Corevette (4+3) Trans uses teh Nash Overdrive This kit includes all new bearings, seals, gaskets, o-rings, Synchro rings, and small parts kit.(This small parts kit includes all the snap rings, washers, needle rollers, etc.) This Bearing Rebuild kit will only contain parts for The T-10 transmission itself, it will NOT include any parts for the Nash Overdrive Unit. BK185WS