I dont understand the reason to worry about if everything bolt up properly, i mean hell if you are going to step it up in serious power your not going to use the same performer or factory intake or exhaust. I think we need to let the ones build/design what is needed to win so i can stop hearing the old phase " why dont you put a small block in it" at the local track. I say as long as the timing cover and valley pan bolt up that should be it.
... not that i can afford to buy anything new at this time.
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