Ver8 + heads...no need to p&p...unless your going to use somthing Bigger than a 35R and your goal is 450hpatw+ ( not stock cams!...AVCS has it advantages and disadvantages...not required for all out power ! or even power spread)
Earlier heads V3/V4....will do 400 easy enough stock...(cam&springs of course...and shim under for V4)
later heads ftw, will accept decent cams un-modified.
The real question is what turbo are you going to use
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