Think you got it wrong. Assuming that it is the same as the 292 and 327. Which I have done in the last month 3 times, that's 2 motors. \:D The "clutch disc's hub that sticks out about 1/2 inch past the disc" goes into the pressure plate. You didn't change the throw out bearing right?

Larry
68 C20 327 daily driver
63 C20 292 Camper truck
65 C10 ? Custom Cab AC,PB,PS,$flasher - Long term Project

Ignorance can be fixed Stupidity is forever