Duffs302

I have the 40 series, love them great sound. Make sure you put on a H pipe for a better sound.

JD1969

If you care at all about performance you will not get flowmaster, the chambered design(which flowmaster has) is more restricive than the stright through mufflers, such as magnaflow or my personal fav Dynomax

Dan04COBRA

Magnapacks!

Razor19

Unless you have or plan on making some serious power dont worry about the straight through flow of the mufflers. Its such a minimal difference unless you are running real power. If this is just gonna be your street driver then just worry about the sound. Like most people said dont put anything but flowmasters on an old mustang.

Fusion_Stang

thanks I will probally go with either the super 40 or American Thunder Kit thx

Js281GT

Yes, good choice. MD switched from magnas to flows. He knows whats up. Save the extra money for something more important. (blower)