Hey everyone, I just got an 07 vmax and I wanna do dynatech headers an x pipe and full exhaust with maybe some high performance cats and nice mufflers. I dont want it to be tooo loud thats why I want the cats and plus it helps keep the rasp down. unless you have a better idea? so, who makes affordable high performance cats where can I find some? or are there some nice big mufflers out there that wont make the truck too loud with headers and still flow good enough? would the stock cats flow good enough with headers? or would they be a bottle neck? thanks guys!