Not sure if I should change my Cat back RSR to something else. I like the sound of this exhaust but I'm not that keen on the way it looks (I know this is a trivial issue but I'm quite picky on aesthetics). I prefer the look of just a pipe sticking out the back rather than a silencer looking box with a stubby pipe if you know what I mean? As much as I'd like to go Tanabe, I just hate the way it looks.
Also, I have a 4" DP/MP and I'm pretty darned sure that 4 inches is overkill, but how will mating a 4" DP/MP vband to a 3" 2/3 bolt cat-back work? Can you buy adaptors or will I have to make one? Will it affect performance to go smaller mid-car or create a hotspot further back where it narrows?