score! but i need help

I think maybe you missed or misunderstood what I was sayin. Here is a post, on this very website, covering the head swap using swirl port heads that dosn't run into the same concerns as what moper is saying. At least worth the read if your serious into mopars.

http://www.forabodiesonly.com/mopar/showthread.php?t=1924&highlight=swirl+port+heads

Advantage to this route is that you'll have heads that will swap to your 360. Just food for thought.