360 Re-Ring? Temporary Engine. Will it run fer a year?

If you are building a new engine as you say you are, there is no reason to do ANYTHING to the 360 if it runs good and isn't smoking, and even THEN it'll probably run for a long time. All of ours have.

I would clean it, regasket it so it doesn't leak on your clean engine bay, do a spray paint rebuild and drop it in, nothing else.

Like Dave Ramsey says, you have to assign a purpose to your money, and spending money on an engine you say is temporary doesn't make a lot of sense, IMHO. ARE you building a 440?? THAT takes a lot of money.