Some people might not believe me, but I have a sport 4.0 SOHC and had the dual inlet muffler, I just cut the pipes right before the muffler, so now its just duals dumped under cab and it sounds amazing. I get compliments on it all the time, it sounds like a boat the way the exhaust burbles, It sounds even better now that I just did a 5 speed swap hahaha. For power I got a drop in K&N filter and a Hensonperformance 93 octane street tune, that combined with exhaust makes this thing scream.