race flow development heads??

Yep. The car jumped to 500RWHP before it was even tuned. AZ. Dyno started tuning and are having fuel pump issues. Working on that with Aeormotive now. The head porting/cam change is worth at least 100hp but once we start tuning, we expect at least 525-550 RWHP on 92 octane. It was worth every penny I spent with Livernois. You have to figure any company that can get 400+ NA horspepower out of a GT engine must know something.