crazykarl

i have the 4.6 and i was told that i could do dual but that it would be considerable higher due to space limitations.....so i just went with single in dual out and frankily i really like it... went with an excelerator muffler and like the sound and everything. true duals i could see how also it would make a big difference if you are running a good tune program and also if you are going to do the expense of running headers...but all this will void warranty at most dealers...

2001stu

it is alot more work to bend up the true duals. my uncle has a muffler shop and he tries to talk me out of the true duals every time i bring something of mine or a friends in there to do an exhaust.

Triton v8

Well it only took them about an hour and a half to do mine. Mine is true duals from the cats. I don't understang why these shops are bs'ing y'all about something so easy. They've been doing exhaust on trucks for years now and now they want to give y'all crap?? I would look for another shop if I were y'all.