I have a 2002 Roush Mustang with side exhaust. I have single chamber flowmasters on it. I'm thinking about getting an Off-road X-pipe. Should i get the x-pipe?? and should i keep the single chamber flowmasters along with the O/R x-pipe..or will that sound like crap? If so..what mufflers should i get? Does anyone have sound clips for roushs?