my rear bumper has started sagging. i had some body work down about a year and a half ago after i was rear ended in a minor accident. not serious damage just fixing a couple dents and repainting the rear bumper and trunk. i know there is a kit out there to fix front bumper sag, but is there any way to fix the rear? its not real bad, but the gap betweent he bumper and the trunk/rear qps is bigger than it should be. as far as i know this bodywork is the only time the bumper has been off the car.