performance parts for a gm 3800 v6. my buddy bought a 98 buick riviera for a good price. its not the supercharged model so he wants to give it a little more “passing power”. i got no clue about domestic cars so i was wondering if anyone has links to companies who specilize in gm aftermarket parts, basic bolt ons, like stickers and chorme pieces that add hp’s . j/k. thanks