Leaderboard

Some back in the day pics of this very car.

From a personal standpoint I wouldn't even bother with the OEM replacement Supreme mufflers, they were huge, a gigantic 7x9 shell, and I'm reasonably sure the inner rear ports were non functional (dummies). I'd just get a pair of the GP (non GTP) left side small muffler (or equivalent) & fit those under the car, pick up a pair of short S-bends (dog-legs), fit a pair of tips onto the ends, weld those to the outlet ends of the mufflers, add a resonator upstream. I'm not suggesting that you need to do what I did (18 years ago), but this arrangement works well and sounds decent (not loud, no braaappp)