I have a 96 gt that I pi swapped last winter, I had the ford plastic pi intake but the coolant runner blew apart. So I found the profession products throttle body/ upper and lower intake. And the lower intake is a three piece that allows for porting. If I port the intake would it be helpful or harmful, because my heads are unported, stock 02 heads with a 3 point valve job. I've heard that the air travelling from the intake to the head can cause a swirling phenomenon which actually causes drag on the air, hurting horsepower.