Welcome..
WTF is a Skylark body?
If your car isn't already lowered, that should be your first mod. Engine mods on the 6i and 6s don't make that much of a difference as far as peak HP number go, unless you have the means to do a turbo upgrade. If not, the basics should do you fine, intake will make your shifts smoother and the car will drive better, and you'll pick up a few ponies. A header won't to much except make the car sound like shit. A nice catback won't give you any power gains either but will completely change the look and presence of the vehicle.
The RPM Store is a great site to order from, you can find most of your needs there. Good luck with the 6! Post up some pics man!
WTF is a Skylark body?
If your car isn't already lowered, that should be your first mod. Engine mods on the 6i and 6s don't make that much of a difference as far as peak HP number go, unless you have the means to do a turbo upgrade. If not, the basics should do you fine, intake will make your shifts smoother and the car will drive better, and you'll pick up a few ponies. A header won't to much except make the car sound like shit. A nice catback won't give you any power gains either but will completely change the look and presence of the vehicle.
The RPM Store is a great site to order from, you can find most of your needs there. Good luck with the 6! Post up some pics man!