^^^ Yep, intake was upgrade do to FMIC hot pipe interference with stock air box. Cat back was upgraded because the stock one had about one more NY winter before it hit the ground. Cracks by the mid-pipe flange, hangers ready to give up the fight to hang on & muffler flanges was reduce to less than 1/2 of it's original thickness. When I went stage 2. I plan on reusing the OEM cat-back, but after I saw it was on it's last leg. I decided upgrade it.