Hello all...I have a 2010 V6 Premium Automatic and eventually want to convert the single stock exhaust to the dual GT style stock exhaust and get the dual exhaust style rear valance. In addition, my husband says I'll need an X-pipe, but does anyone know if this transition would be seamless, or will some modifications need to be made? I'm interested in purchasing the GT stock exhaust (used or take off) because I think it would be quieter than some of the aftermarket brands.