GTRS, there's an independent muffler shop in Lawrenceville, Ga. that surprisingly is owned by the wife of the first shop that couldn't get the second bolt removed. They had the muffler swapped out and welded in in less than 2 hours and that included getting another car finished up.
PK, I got a good stock muffler from another Fiero. TFS sells the Ocelot system for the Fiero, from the converter back to the tips.