What do you all think about a Ford PSD w/ Stacks?

I just wanted to see what you all think? I have a 04' F-350 PSD, I have done some work to it already and want to do more. Right now its got a 6.5" lift with 37X13.50 pro comps, I have done the intake, got a superchip, and have a 4" exhaust out of the turbo that opens up to 5" where the cat was. Im about to put 36X15.50 MT MTZ on black 20" wheels, and put 4.88 in the rear. I have been looking at some 5" stacks that will come up right behind the cab, What do you guys think? Don't think I am going to do it but IMO they look BAD @$$! Thanks BG