I'm running a stock muffler now I have a muffler for an 85 rx7 I was thinking about installing i't would have to be upside down the inlet is on the wrong side other than that I think it would work it's one from pacesetter they usually don't last long though. I lost my muffler once and ran straight pipe for a while didn't sound to bad actually the small hole i had in my down pipe was louder than the full size pipe outlet lol
i just finally got mine to fire. sounds pretty nasty with an open header. i was wonderin how to run the exhuast since the header flange is right inline with the T-bar Xmember.
oh yeah, i ran stock manifold/cat on my 86 with 2 1/4 pipe and a cherry bomb. I LOVED that sound.
dude i sold my xcab 88 too put on a civic fart can and thought radiator hose would work for piping dumbass