Will the rear driveline from a 78 Dodge Power wagon standard cab short box with full-time 4x4 fit an 81 W150 standard cab short box with part time 4x4? I am needing a driveline for my daily driver 81 and cant seem to find one. We have a parts 78 that should be home in the next couple weeks and has the rear. Just wondering if I need to keep looking. Thanks, Jeremy