What parts and pipes make up the exhaust system on the rest of the car? Oem s54 cats,non m resonator or x pipe? Or is it all M exhaust and you are just having trouble with the muffler?
You can replace the X style resonator with a muffler,put two individual resonator between the headers and the new muffler,and then use the photo you posted to fab that style tail pipe.
sent from my ATARI sc1224