"College student", to me, equals little time to devote to a project and little money to spend. Although others on this board will dispute this, I won't even crack a head bolt on a motor unless I have $1,000 to devote to the rebuild and that's a simple rebuild, nothing fancy. Then, you have to have a dedicated place to do the rebuild that can be tied up for the time it takes. If you're not familiar with the motor you're rebuilding, that means even more time finding reference material and reading about how to do it. Then there are the tools needed to do the job properly.

If I were in your position, I'd check with the wrecking yards in your area for a good, used motor that is complete and capable of running as is. Have them do a compression test for you and pass on it if any of the cylinders read less than 130 psi. All you will need to change the motor are basic hand tools, a large diameter catch pan to drain the radiator and a cherry picker which can be rented from a rental store.

Any small block V8 from 1955 through 1985 can be bolted to the TH350 trans, but I'd look for a motor from '75 to '85 so that the brackets and such from the '80 motor will have a better chance of bolting up.

I might expect to pay around $500 to $600 for such a motor. Prices in your area may vary.