I have an older Yamaha G1 golf cart with body damage. 3 places have cracks and there is a small piece of fender flair missing. Looking at the cracked body material I do not see any sign of an internal core of fiberglass mat. The front body is more flexible than the rear but seems to be the same thickness. The front is a light tan plastic in those places that were never painted. I do not know if I should maybe use the repair materials recommended for new car plastic bumpers, fiberglass and mat, or something else?