If your gonna be running an offroad H with longtubes and the american thunder flows, you might want to consider changing your mufflers..

 

Yea, i need some new mufflers... any ideas? I had SLP on my old stang and i loved them but i think with the LT's and off road it would sound horrible. No rumble, just popping exhaust.

 

I think an awesome set-up would be L/T, O/R H, resonators and MACs. The resonators would reduce the drone associated with the MACs and reduce the trumpeting associated with o/r midpipes. Don't worry, even with resonators it will be loud enough. I sometimes run pypes catted X, resonators and MACs and that set-up is louder than the catted x, flowmaster combo that someone I know runs.