Hard to beat a BB Chevy with decent heads with anything else for the $$$. Heads are the key, and the BB does'nt disappoint. The blocks are super beefy, even the two bolt mains, most can be bored to .100 over (allows many rebuilds). The only penalty is the weight. Any of the cars you listed will swallow a BB no problem. Hell, I've seen them put in Fiero's.

Bang for buck = Rat motor