New Mufflers for Fun

ABODYJOE, I asked the smartest muffler guy I know and here is what he recommended.

"Dynomax Super Turbo system 17491, for the 1986 Mustang GT 5.0L, is still
available. 17491 is a 2.25" OD system; same as the OE. Tail pipes are all
aluminized (no 304 SS rear section) and exit straight back with an angle
trim."

I hope that this helps and I most definitely agree with his suggestions, especially if you plan to run the cats.
Tom