If I do a PI swap on the stang.. does it just make it as powerful as the 99-04 GT's??? Or does it make it more powerful??? It is basically just like having a stock 99-04GT if I do the swap?

 

I would guess it would bring it up to par with the 99-04 GT's if your using those sameparts.

Isnt a NPI to a PI swap just an intake manifold and heads? If it is, then you can defentantly get ones that are better than the 99-04's. If I was going to switch both of those components I would upgrade to even better ones instead of just stock 99-04 heads and intake manifold because since y our paying for the labor, might as well get something better for a little more $

 

Peforming a PI swap will actually yield higher gains than a stock 99-04 PI GT. It does this because it raises the compression of the motor. This is great for nitrous, but not great for a Supercharger.