I bought a set of Stealth's 2 years ago.Main reason..price,as I was building a more street orientated and true pump gasoline 440.Engine has cast pistons,9.0 compression and a MP 557 cam.I have not tuned the engine 100% yet as I only made a total of 4 passes at 2 different tracks,but I'm running 11.30,and I think I still have a tenth in the combo.It would have cost just as much to go back thru my pocket ported 452's that were damaged after I lost a 440 back in 2004,as it did to get the new Stealth's.

The Stealth heads have done the job for me,and I'm pleased with how they have performed.