Alright guys I am going to do my exhaust right this time. My old turbo muffler is rusting and my car sound slike a honda now. I am thinking I should get the hotshot header, a high flow cat, and a magnaflow ss muffler all in 2.25" unless the outlet on the header is 2". Does anyone know the outlet size on the header and if there is any direct fit high flow cats for the b12? i saw a catco at summitracing.com but it was universal or for the b13? would the b13 cat fit?