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For a 1200/1400rwhp build. How far would you port your head, just do a CNC stage 3? Or do a whole entire custom by hand fully port on intake and exhaust side? Car a single turbo 4.6 for heads up class racing. Have a 01 cobra intake gutted . TB is how out the front . Top of the intake sheet metal , bottom was cut and now sheet metal. Intake is 5.0L in size. Car is going to be on M1 with no intercooler. Thanks Mike