Thoughts on this Dodge D50 pickup with a smallblock
Memories of my younger days... I did a number of smallblock powered Colts, Arrows and D50s.
Mitsu used a version of the 904 in their vehicles, so mounting was a breeze. Bolt the smallblock 904 in place and use that to locate your motor- weld up some appropriate frame mounts. Used a truck pan to get the rear sump. Driveshaft fits right in as does the shift linkage. The rear end is dicey, but they're usually geared pretty low so they would live for a while... Mounted exhaust manifolds backwards, so they dumped to the front.
I would buy them from the junkyard, dump a motor in and go have fun as long as they lasted (yeah, they'd twist!)- or sold them to someone. Good times and lots of fun.