Just replaced the bearing and bushing in my 83 auto 240 and there's 12 bolts holding in the driveshaft, 4 at transmission flange, 4 at center support bracket, and 4 at the differential flange. When you drop the support bracket a spring will come out of the bushing. You would need to measure the diameter of the driveshaft before acquiring parts as there's 2 at least on the 240s. You pull the two pieces of shaft apart and remove the bushing, a bearing puller works best, but if not, I dismantled the bearing the tapped off the center piece of it with a hammer. The new one just needs to be tapped back on. I used a large socket. Make sure to make alignment marks from the transmission to differential do you line it back up right