Is a 72 307 in a 79 C20 an easy swap?

[lap15]

First off, I am not an internal engine person and have never swapped a motor before, but I want to attempt it.
My 79 C20 has a bad 350 4BBL V8 with a newly rebuilt TH400. Someone is giving me a decent running 72 307 2BBL for free that's attached to a SM456. Can I use the 4BBL w-intake, PS, alt, and HEI from the 350 directly on the 307? Also can I just swap the flywheel for the flex plate since I'm keeping the TH400? What else am I going to need to do the swap besides engine hoist and stand?
Some other questions I have are: Will the HEI just slip into the 307 block and what about the wiring? What about motor mounts, do I use the ones from the 79 or from the 72? What about the pulley for the PS pump and alt, will they fit the 307? Finally, will the 79 exhaust manifolds work on the 72, because the driver side ram horn has a crack in it and can't be used in the swap. I am obviously doing this on the cheap and plan on using the 307 until it dies and hopefully by then I can rebuild the original 350 and install it again- so, I do not want to have to do any modifications. Thanks!