Do you have any dyno data comparing Indy EZs to Stealths and or 906s. I have a fresh flat top zero deck 440 and as soon as I get my tax refund I'm going to finish the engine and car. I have a set of 906s but I'm very reluctant to spend money on them so I'm considering either Stealths or Indy EZs. I've heard repeatedly not to purchase Indy products directly from Indy because they have quality issues and if you get a bad product they simply turn their back on you. Where is a good place to puchase Indy, Hughes, Dwain Porter? Also last year Edelbrock announced they were coming out with new RPM Xtreme heads for B,RB motors and they said 80cc chambers with 220cc ports but they're no longer on Edelbrocks web sight.