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Message: <blockquote data-quote="94Pro-5.0" data-source="post: 333762" data-attributes="member: 9787">ok guys heres my theory. before i had the trick flows and a few other things, i raced on the street several 99-01 cobras, mach 1's, z28's and ss's. they all have roughly 300-325 hp. i was beat by a couple of the ss's and z28s, but i also beat a couple of them. i have never been beat by a mach or cobra. i usually beat them by quite a few cars. the tech at trick flow told me i should see 60-70 hp with these heads over stock. i dont really see why i wouldnt be at 350+. :dunno: also, if you guys think i'm not there, what do i need to change in my set-up beside nitrous or blowers to get there?</blockquote>