Hey guys I'm itching to put a new exhaust on the X. Its a 01 4.4, What are some choices I have? I know of Denon,Remus,and SuperSprint, I am looking for something with a nice growl to it . Does anyone have any experiences with these brands or another brand that I dont know of? Also would it be best to let my local dealer install? or take it to a muffler shop, around here there arent many reputable shops around here that work on exotics(Bmw,MB,Audi,Etc. Etc.) Any help will be greatly appriciated