Changing driveshaft bearing type, replacing driveshaft

[dyrt]

Howdy people,

My 69 c10 longbed originally came equipped with an inline 6, 3 speed, and the smaller driveshaft bearing(bolts are front to back, not side to side.) This means it also came with the small diameter driveshaft. I am installing a 6.0 and 4l60e so i want to change to the larger style bearing and larger diameter driveshaft. Doesy anyone know of a good donor truck for the larger driveshaft? Also, i need a bracket for the heavier duty bearing. I have seen one that hangs from the top of the trailing arm crossmember(so the bearing hangs down from it on the back side) and one that bolts to the bottom(so the bearing is essentially inside the crossmember) while looking at pictures in threads all over the forum. Are there two different brackets for a reason or did someone just bolt a later bracket into a crossmember and use it? Can anyone with any experience in this swap chime in?


Mike