Paint-On Bed Liner in Jeep Tub Jedi. One big problem with vehicles that see lots of abuse, especially those that live in winter climates with salty roads, is rust. Any dents or deep scratches that expose bare metal will eventually rust. While the problem is most obvious on the outside of a vehicle, the inside of your body tub is just as susceptible to damage if you carry lots of tools or parts around with you.
Stuff tends to slide around and rub against painted metal, quickly turning it into unpainted metal.
Many Jeepers that I know have combatted this problem by covering the inside of their vehicle's body with some sort of paint-on pickup bed liner. Below is a summary of the liner choices I've seen and the popular opinion of what they're like. The Big Dog of bed liners. It's got a rough texture and is fairly flexible. Removing seats, bolts, etc.