I know how you feel! My truck had running boards on it when I bought it, guess what they were hiding! Both front fenders had rust at the bottom, when I poked at it I had religious fenders! (holy... holey,whatever) Underneath the cab doesn't look that great either. I thought these vehicles were galvanized. Fender flares'll work wonders for you're truck, sand to bare metal and seal things up well with rust converter, rustoleum, whatever and I swear by shooting, oil, WD40, Gibbs, deisel fuel, or Amsoil HD metal protector in the seams. That means in the rockers,inside the doors, over rear wheel openings, and all the seams underneath. It works!! Do it several times/year and it'll stop rust in its tracks.