Basically it’s a 1972 designed truck with a Cummins power plant. I’ve had two of them. I never had rust issues living in Texas but I had upper a arm issues. The truck is just not heavy enough to take prolonged punishment like the newer body styles. Brakes wore out real fast. I was real good at that. I had extra rotors and drums turned and ready. My son in law has a 89. It really lacks in power without the intercooler. Wiring is giving him all kinds of trouble and parts are hard to find. Odometers can break easily. Motor outlast the body by a long time.