PontiacBonnevilleClub.com

I would like to upgrade my headers to an aftermarket set. What is the best header and how much extra HP would I get.
Do I need to upgrade the whole system or just a new high flow cat.
Any links would be great.

Not sure what headers would even clear the 4T60E connector... Can't remember if it was the SLP's that actually did not interfere with that connector...

the SLP's or the Knockoff SLP's are the ones that you want. All of the other designs will have clearance problems