Rosariors: Yes I am still running Roush exhaust, yes it is only 2.5 inch. I know since I put kooks LT's and an off road H, one would think I would have switched over to a full 3 inch cat back, but I have not yet. I know it would open it up a bit. I am pretty happy with sound though. Eventually I will get a cat back, too many other things on my list. Also, I always loved the Roush sound...So I may never change it. I considered a few different ones, Borla S type maybe...Kooks all the way, or Stainless works. I will let you know if I ever change it. I still need to make good videos of current sound. I am about as fast at doing things as you....wheels and tires, still waiting for your install.....
Phase 3 upgrade including CAI, Fuel pump voltage regulator, (629rwhp), 543 torque, Kooks LT headers with off road H pipe,ID1000's, Steeda Heat Exchanger, SCT tuner with custom Pro Dyno tune, BMR LCA's, BMR relocation brackets, BMR adjustable Panhard bar, BMR Rear sway bar, Steeda Aluminum driveshaft, Steeda X-brace, Steeda Differential cover, Steeda torque box brace/frame rails, Shelby trans cooler, Mcleod SS clutch line, RP fluids, whiteline transmission bushing insert and MGW race spec short shifter.