I've got an 85 chevy 3/4 4x4. I think i destroyed my auto hubs this weekend. It would stay in 4wd even when it said I was in 2hi. After about 60 miles of driving the hubs got so hot I could barely touch them. I wheeled with it for a few hours then they started to pop in and out of 4wd and then finally neither front wheel was spinning. I bought a set of warn premium hubs and plan on installing them tonight. Do I have to get a conversion kit or do they just bolt right up?