cylinder head question?/AGAIN

My goal is to get around between 450 and 550hp. But for the street not track although it would see the track a little. For a few runs to see what kind of numbers I could put up

Sounds like you're on a tight budget, If the heads you have definitely have 2.08" I and 1.74".E, spend a bit of money to have them cleaned up (surfaced, bowl work, gasket matched, etc). It shouldn't cost more than about $400, IF some parts can be re-used.