Hi all,I just bought a 2004 Pontiac Grand Prix GT2,with all the bells and whistles.I would however like to add some horsepower to the old girl.I just bought a cold air Intake,and was wanting to add a set of headers and a high performance exhaust.I am however not all that up on all the high performance add-ons out there.Can somebody help me with this?I need to know what High Performance headers and Exhaust will complement the Weapon-r Cold Air Intake.The Engine is a 3800 6CYL.Any help would be very helpful and appriciated.Thanks Mingo