plastic fenders? Ever done any auto-painting before? I doubt you would end-up with a good job if you have no experience. There is a lot to know: surface prep/color matching/application technique/finishing/etc. How did/does the hood hit the fenders?
I found something at Walmart called, "RUST Converter", that actually turns the rust into black primer. they claim it "Dries to a hard sandable surface. Inhibits further corrosion, for use on all iron and steel surfaces and can be used with body filler". It won't replace the holes but boy does it kill the rust growth. I'll take it.:thumbsup: I need all the help I can get. Sprayed the daylights out of that damn rust today and it did what it says so far. I know it won't last forever tho' (like most medicines)I would do something, bondo may work better then nothing. I wold try to cover the rust with something, if it didn't stop it totally maybe you can atleast slow it down. If bare metal is exposed then it WILL rust. Luckily in the south we don't have much rust problems so I haven't dealt with it alot, But when I had a few bare metal spots on another car I sanded it and put a primer coat on it while I waited to get it done properly.