'83 stepside parts runner/hauler

Went and picked it up on Sat. it was about 30 min. from SC and took 4 hours to get there. Paint and Body work are not satisfactory by any means (pics do not do justice of the waves and dents in the paint) however the engine trans runs amazing. I drove the truck the whole way home only stopping for gas once and to check the fluids. I did 70-75 the whole way back no problems, as soon as i pulled in the driveway i noticed the engine was heating up and the voltmeter was going down and shut it off. rolled down the driveway opened the hood and the belt had come loose from the water pump/alternator. Got lucky there! But I'm going to resand and smooth etc and put it in primer before repainting it, not sure if i'm going to put the midnight express on it but other than that just needs little stuff done. GIVE ME SOME IDEAS!