Any 56 -62 V-8 truck and any 63-72 truck will will allow the engine/trans to bolt to the original mounts, front and rear. Any V-8 bell housing 56-62 and any other bell housing, at least through 1988 will bolt to the block. You must be aware that the are a couple of different alignment opening sizes, so decide on the tranny then find a bell housing that will go between it and the engine.
best wishes,
Les
