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Message: <blockquote data-quote="hottwheels04" data-source="post: 686094" data-attributes="member: 8550">well for example my friend with a 2004 gt put down mmr block 281 c.i fully forgedstage 3 ported pi headsstage 3 mod power house custom camsfull bolt onsfull fuel systemvortech s trim12-15psiRace gas50 shot of nitrous to spray intercooler587rwhppump gas blower only washigh 480His new setup same motor with a 2.6 kb15psirace gas50 shot nitrous spray / race gas was680rwhppump gas blower only was 505rwhp? is how much boost are you running with the 3.12 with the blower and 4 inch pipe?without nitrous or intercooler meth or race gas prob 500hp or less, if you do the meth etc prob 500+ similar to my friends numbers. being his was little stronger and nitrous to spray intercooler and his was a manual 5 speed car you will prob be down about 50+hp compared to his mods depening your boost.</blockquote>