?? RHS or edelbrock heads for my 408 ??

crackedback said
At 550hp, you'd need a pretty heavily ported set of ede's or a set of RHS's with the pinch opened up a bunch.

Talk with someone like Brian at Indio Motor about what it would take to make an honest 550hp.

Cracked, i watcher her for ten minutes hoping those puppies would finally shake loose and come out of her halter top but it didn't happen. You're such a tease.