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Message: <blockquote data-quote="twovalveterror" data-source="post: 1030788" data-attributes="member: 15772">my brother has ported trick flow heads.  with just the addition of those heads, he gained 40 hp.  his combo was ported e7's with a comp cam and the rpm 2 intake.  all the usual bolt on stuff too, but the only thing that changed was the heads.my question to you is, why invest in a top end kit, when you can just up the boost and split the block?  you don't have much room to grow without risking a walk home.  if you do go with a better block, any top end kit can't be beat for ease of use, but you could probably do better by piecing together your own kit.</blockquote>