universal joint, or u-joint, made IRS possible. While U-joints had always been used to couple the front of the driveshaft to the transmission and the back of the shaft to the rear differential, since 1963 their role has expanded to also coupling each rear drive shaft (or half-shaft) to both the differential and the rear wheels. U-joints play a crucial role in the overall scheme of things, since they are ultimately responsible for delivering power from the transmission to the rear wheels. Last month, in Part 1, we removed the halfshafts from the car, and now, in this month’s conclusion, we’re showing different methods of replacing the u- joints themselves in the half shafts. The procedures are the same for all C2 and C3 Corvettes.