what ever you do. do not just use bondo. I used to live in hawaii were the wind blows sand and salt water every were. Its been stated that you need to sand this it true. but if your not going weld new metal in you can always use fiberglass and you can still sand it and then after you sand it to the shape you need it the apply duraglass (way better than bondo) then after you get that sanded down with 36 grid sand paper than take 100 grid and go over it again. your going to get alot off scratches in it, but thats ok, next take a filler called rage gold this is a light weight filler ment to fill in little scratch then sand with 100 and the with 200 then primer the shit out of it and sand again then primer then paint