CME Exhaust
I don't know how good it will look with the RS rear skirt because I know mine looks like absolute crap with the valance off of it right now. The RS skirt might not extend low enough to cover the 90 degree bends, leaving them exposed. Also you can contact 2000Firehawk, he usually has some slp mufflers and pipes for sale. Maybe you can piece some of those exhaust parts together and make a catback.
https://ls1tech.com/forums/lsx-parts-sale/768538-b-brand-new-borla-slp-mufflers-more-stuff-b.html
He's got the SLP Dual/Dual back section for sale. From that you can use the muffler, piping, and i-pipe. All you would need is some 90* bends, the cme tips, and an over the axle pipe to get you the complete setup minus the valance. It's going to cost.




