Replace 80s primex 3 port inboard muffler -

[CamaroMan]

1984 with a v6 GM.. The muffler has 2 3" inputs from either side one inline and another 90 degrees, and a 4" existing straight out back.. Cant seem to find anything online -

Shaped like this:

(fwd) 3" = [--muffler body--] =>> 4" (out aft)
3"

Is it possible to have this repacked with whatever makes it quieter? Motor stood seized for 10 years, just rebuilt it and the exhaust baffles have prob been blown out..

 

[Bondo]

Ayuh,..... Not always, but many times it's water in a muffler, that muffles the noise,.....