My mid-pipe is 2.5 lol. Ya i know, overkill. But it would bolt up to a stock system. It bolts up to a OBX header and stock catback currently.
What you keep saying about this RB exhaust with a cat? You mean cat back? A cat is catylitic converter. A catback exhaust goes from the 2nd cat all the way out the back of the car. This is why its called a catback. It doesn't have a Cat in it... The two oem cats are in the J-pipe and the mid-pipe.
oh ya i know i guess i forgot the "back" but yes i do mean cat back.