I am checking to see if anyone has any tips or tricks to installation of the back piece onto the bumper. I thought I heard something about a lip or something if you dont install it right. I know I am going to need some plastic bolt pieces to hold it in place, but if there is anything to make this install any easier or look better, I am all ears. This is not the quad exhaust but the SLP Dual Center Exhaust setup. Thanks Fellas