Like to share my experience here. I went with the AWE 0FG. Let me say how much I love this exhaust, however, on my 23' crew cab it doesn't fit. 2 different exhaust shops have went over it to get it to fit properly and it just will not. I rubs on the brake line on the driver side. It also rubs on the line over the differential. Moreover its sits so close to the frame on the driver side it occasionally rattles on cold starts. Working with AWE to see if by some off chance they sent to wrong exhaust which I doubt, the 23' ram seems to be a little different than the 22' and older models it claims to fit. Guess at this point ill be looking at a comparable exhaust. Likely going the Borla route but so torn on which to choose that is comparable to my AWE...the S-type or the Atak....