[tdangle]

I'd do front disc brakes, rebuild back brakes, 3 point shoulder seat belts, Tires and just make sure the engine is running well. by adding a HEI distributor, flushing the fuel system, and new radiator. All this should make the truck as safe as you can (won't compare to new vehicles but you can't do anything about that) and running/stopping reliably to avoid stalling and or breaking down in traffic.