I've been lookin on here to find anyone that used the FM Super 50 or 50 HD 2.25"DI/3"SI ? I think that's what I want to put on but want to hear it first. And maybe swap out the 2nd cats with bullets. Input?
the muffler in my clip is a dual in single out, i think you 07 has a stock dual in single out muffler and that is what would marry close to your stock pipe size... the 50 HD is more for people who have BIG HD trucks, the configuration is all wrong for our trucks unless you want a single in and a dual out, then you would have to get a y pipe run some pipe to the muffler and then have dual outs. if your looking for dual outs then pick up a dual in dual out 2.5" then you could run any of the 50 series's SUV, HD, or Big Block. the SUV has the shortest case length so out of all of them, it would be the loudest.
edit of my last post, my bad, the SUV has also had its name changed to the Super 50 Series, my apologies, that is the one i would use on a titan if you didn't want too loud, otherwise id do a Super 40 or Super 44.