Been running a turbo'd 572 for years in my street car. Don't need much boost to go fast and you don't wreck parts since your not running on the ragged edge.

What heads/compression etc does this 572 have?
I can give you some direction if your thinking of doing it. 7's aren't too hard to get at 3500lbs on pump gas.

Switching to bigger heads and twins now but you can do some amazing things on nothing special for parts.