Any muffler shop, can weld up, whatever muffler you like. They cut after the bolt on point to CATs. So CATs can still be unbolted if need be. But they will weld tailpipe, so no longer un-bolts.
There are also a few bolt on that are cheap. Some like them, because of thinner profile, for better rock cleanace. But often the cheapos, don't last, nor have correct fittings on back side.
Personally I like OEM best!
I've found another looks really as good. It has heavy gauge 409 Stainless Steel, the correct Y pipe and correct tail pipe fitting. It also has the bracket for dampener. Comes with 2 front gaskets and 1 rear clamp. You'll need the Y pipe nuts and bolts. Also cage and dampener nuts and bolts. You may also need the rear gaskets, since picture doesn't show it.
Look here with your VIN# for parts involved.
www.partsouq.com
R&R mufflers is a messy job. Often requires a cut wheel (angle grinder), for the front bolts. The trick to remove the rear tail pipe. Is turning muffler ~5 degrees. IIRC, CCW, looking at new muffler will clue you. It has indentation for a bump out nipple in tail pipe.