I used Borla cat back with down pipe and a single cat. All a good fit. The down pipe works well, the cat back pipe and muffle to tail pipe fit up well.
But, I really can’t recommended because of the muffle noise! I don’t appreciate how loud it is.
I did the bosal replacement, also did an unknown downpipe with two cats. They rusted out quickly and sucked. Not a great sound either.
Recently got the @OTRAMM exhaust with the magnaflow downpipes that is currently being installed and is awesome and much higher quality.
If those aren't options explore around for a good exhaust shop that can help you locally.
My local shop replaced my muffler, cut and turned my cats, did an over frame reroute, and relocated my resonator for just over $500. All new parts were stainless.