Why not just take the VX Body off the frame and put it on a Chevy truck/ Blazer frame with a 4 Wheel Drive DynaMax Diesel power train or a Ford Diesel 4WD? Which ever comes closer to dimensions needed. A lot less work and parts would be readily available!! You could probably find a totaled truck at a wrecking yard and or have them look in their wrecking yard dealer system to locate you what you want!