I have an early 1950 Willys Jeepster with the 49 body style that has the Dana Model 23 rear end with 4.56 gears. I understood that all Jeepster can with 4.88 gears. The are some that say they also came with the 5.38 gears, although I have not seen any, but I have not heard of any coming with the 4.56 gears. This one has the L148 six and does not have the overdrive. Any thoughts? Thanks.