bell housing question

In all fairness, you asked "are all bellhousings the same"

Rusty gave you the answer.

All I know is, they have to fit the engine

They have to fit the body

They have to fit the transmission

You have to have a flywheel that is compatible with the bell

Such things as early 273s used a very small clutch/ flywheel. You could use a setup like that, but getting a high performance clutch in one of those won't happen

Something out of a truck won't work, I don't know if it'll clear the body, but it likely will be drilled for a "truck" transmission.

What does that leave us with? About 68--76 340/ 360 A bodies, I would guess.