PI heads only have an increase of 35 HP and you need the PI manifold that altogether is about $900 just for the parts no installation. Hmm.. that sounds like a waste of time and money to me. Get the cams and if you haven't had to replace your plastic manifold do that. I could see if your going to race the car and your buget is large but other than that I can't see swapping heads
98 GT
kenne bell S/C 9 PSI Intercooled
390 RWHP NO PI HEADS
98 GT
kenne bell S/C 9 PSI Intercooled
390 RWHP NO PI HEADS
