I'm running a maggie on my '06, with heads/cam/meth injection and most bolt-ons and supporting mods and am putting down 525rwhp and 486rwtq on 3#s of boost. Stock was 320rwhp/318rwtq. Magnuson has just increased the price of their kits and they are going for closer to $7k up from mid $5k. Procharger and STS also make nice kits.
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2006 GTO M6 IBM 525/486
1970 GTO Dude built 455, , Auto Convertible, Paint and Body Work by Prodigy Customs.
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