'77 Van pieces interchange with '72 GMC

[grancuda]

I am looking at buying a '77 Chevy 1/2 ton van for $500 that has the stock motor rebuilt with about 2 years worth of miles and was parked 4 years ago. I am trying to decide what all I can use to convert my I6 to a 350 on my '72 GMC 1/2 ton. I think I am going to leave mine a 3 speed manual for now but haven't decided for sure, wouldn't mind doing a 700R4.

pros: early style HEI, early style 350 manifolds-not 305 logs, 6 month of use on a new Edelbrock carb, good base engine for a daily driver.

unsure: will the motor mounts work from the van or will my stock straight 6 mounts work with the 350, will the crank be drilled for the pilot bushing, how will my Z-bar mount up, will the crank of the 350 be drilled the same as my 250 I6 for the flywheel, will the radiator fit-the top mounts look the same, if I use the turbo 350 will my cross member mount up to it, can I rob the swaybar from it and put it on mine, could I save the calipers for mine for spares as well as the spindles/hubs/discs????????

cons: getting rid of the turd van when I am done