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rear valance

  1. Interior & Exterior Styling
    I am looking to install a rear lip on my 4dr Cobalt LS like what SS have on their rear bumper. I need the step by step on how its done. I know you need to cut the lip to fix the bumper on a 4dr and cut some of the bumper too and make slots. I just need to know where to cut and what to use to...