Picked up the 4-cyl axles & motor mounts today and dropped off the old 3-pot at Ivan's dad's wood lot (it's now sitting with the 4-cyl in the back of an old pickup truck (with cap)).
Several broken bolts later (steel bolts in aluminum transmission housing - grr) the 4-cyl's offset mounts are swapped over. Also busted the speedo cable end because it's also corroded into the housing. Will have to drill/chip that out too.
This weekend I intend to have the tranny & axles reinstalled and test-install the motor. We need to measure it up for a custom mount. I wanna try stick welding