I don't know much either but the 1st thing I would try would be tall radial tires. Makes a GIANT difference in how smooth the truck moves at highway speeds and how hard you grip the steering wheel(much better and easier handling IMO). Sure my O.D. helps but the tires are the magic. I also believe that if your brakes are in working order, they can easily handle taller radials and higher gears w/ speed up to 65-70.
