360 choices

While that may be true, any year 360 is a fine one for a budget bracket racer. I'd consider a few things while looking;

Low miles
A Pre-Magnum engine for the roller cam
A Magnum engine, though you can not oil through the block.
Newer engines have a slightly higher piston height which can help out some. Bring a mic/dial caliper and a flat edge to measure the piston depth if possible. (Head comes off)

If you can hear it run, great!
If not, the gamble is on.