Actually, I don't have a project vehicle yet. I'm just doing research.
I know it's a heavy engine and for sure, a 1/2 ton will not hold it. I was thinking of a 1 ton or bigger. (There are lots of old GM/Chevy trucks in my area that were used in hop yards..... make an offer to a farmer....might get a project....)
The engine seller I saw (which isn't popping up on Ebay searches) was selling complete, running 4BT engines w/ the GM turbo 400 bell housing. The engines were under $2K and for an extra $400.00, they said they would include the tranny!