Zach Bro you heard my hatch the other day didnt you?its 2 1/2"header back to N1 muffler,its pretty fuckin loud but if you do your 2 1/2 from the header back no cat with a glasspack(resonator) in the middle it will osund tight,and if you want i gotta guy who will do it all for around $130..lmk thanks man