I have been asked, by a motivated seller, to come and look at a 1949 3800 dually, (with a mostly intact Williamson stock rack). Doesn't run and hasn't for many many years. This truck is the 5 window model with those windows intact. It does have a full set of matching and proper 18" wheels, OLD tires. What is the best and simplest upgrade to get better gearing in the rear end? I have a 1973 GMC dually rear end, is that a good option? Pictures will come in a few days.
Al
Alan