Does the D50 4x4 have front leaf springs?
For a few years, Jeep had a tube front axle that bolted in place of the 4x4 front axle on 2wd Jeeps. It might be an option to locate one of those axles to replace your front 4x4 axle, if it can be made to fit. Picture Gasser class ride, front axle on leaf springs, raised up or not, with the modern Hemi...Gene