whats the hp goals? you doing a rear mount? i only ask cuz u list pace setter headers.what rpm are you looking to turn?,how much boost?Is that 70mm a t4 or t6,what a/r..what you doing for cross over size.whats the lobe on the cam?
honestly i would have the heads ported and look at the flow data,air speed an such of the heads then pick a cam.
a t70 is small with 383..its good for street use but depending on what you go with you might be in boost alot or be over working the turbo if you ever want to up your game and boost..
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box of ls6 junk an some dope..i wish i new what i was doing
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