Anyone thought about cutting the base gt rear valance to make room for a quad exhaust?... I know Roush has a rear valance buy only for the premium gt..iI really want those quad tips buy don't won't to spend the $$$$ for a new rear clip..New here had a question and figured this would be the best place to answer it, does anybody know If the 2015 lower valance is replaceable like the 10-14s were? Thinking of getting a base Ecoboost but want the upgraded rear diffuser.