i got a ebay cat back a few years back now, sounds perfect, aka stock and quiet lol iirc it cost me 260 ish shipped. for the most part it mounted right up, i had to add hanger mounts cause i went from a single to dual muffler cat back.

same ebay store i got mine from, 1997 - 2002 Grand Prix 3.8L Muffler Exhaust Pipe System Kit | eBay

this kit has no tips, you reuse the ones on the car. should still mount right up .