Okay it's not a truck but it going to be my winter project, it's a old tilt snowmobile trailer that is going to become a utility trailer for lawn movers, my kid's quad, dirt bike and what ever else we can think of. The skills we use on our trucks are the same as I will use on this. I need to repair some rust holes and remove/treat rust on the bottom. What products have you guy's used Por-15, Rust bullet, Etc... I want to know from experience what has worked. I plan to paint it with a frame paint and the deck coated with spray on bed liner. It will get rewired/new lights, new wheels/tires, new trailer coupler, I plan building sides for it also.