I recently bought a 1997 pontiac gt with a 2002 gtp 3.8L supercharged engine. It has a zzp 304 stainless 3" catted, a qwikchange supercharger pulley system and a w-body cold air induction system. I was considering getting pacemaker headers for it and putting in a 3.4 pulley that I have. Are pacemakers any good or should I save up for the stainless headers? What else could I do to give my car more power?