Just so you know, the cutouts on the RT are square. If you go with a rounded exhaust pipe they wont look right (In my opinion). Something to consider before you cut yours up.I am planning on doing a dual system on my SE. Don't know what yet, but am planning on it. Budget is an issue so looking to save money and cut my existing valence. Could one of you with an R/T valence, give the measurements for 1) width (left to right) of cutout 2) height of the cutout and 3) distance between the cutouts. I appreciate your help.