yes oven cleaner will work ,I've used it myself..you will end up painting the side panels. oven cleaner will remove all paint...don't know mush about 600 Indy SE but if the belly pan is plastic you will need to sand and wash it with javex or bleach ..this trick helps the primer stick to the plastic .this will make the plastic sticky so primer and paint sticks better and stay on .learned that on well working for PPD make hoods and skis for Ski doo,Cat ,Polaris,,etc...I've used this trick on any hoods and plastic parts..