American Thunder Catback
Alright, after quickly glancing over the post it seems that the mufflers are between a flowmasters 40s series and super 44s. I haven't had them on a mustang but I've had both on my 65 chevy.
Take it for what it's worth...
40 series- louder of the two had a very nice throaty sound. More a raw sound. Drones at lower rpms. Sounds better at an idle of the two.
Super 44s- it has a very good tone. It has the unique sound that only they make. The drone isn't as bad as the 40s, no cats (obviously), or mid pipe, on either set up. Personally, I like it over the 40s.
I, personally installed the entire exhaust, bent the pipes, welded the mufflers, and put the tips on. No clamps.
Adventure till you drop
Mustang of the day,
July 12, 2015