The Wife finally gave the green light for new exhaust. Now I cant figure out what I want. I don't currently have a heat problem but I am planing on installing DD2's in the future. The two choices I'm stuck between are the 5in kit without a muffler from Big Exhaust, or a set of 5 to 6in stacks. My question is can anyone give me the pro's and con's of both systems as the Boss has said I can't get both so I've gotta get it right the first time.