Wow very interesting stuff. A few things I noticed:
1. The t-case is unlike any other one I've seen/ No viscous coupler and then the big brake drum setup (I think that's what that is?) on the rear output. I wonder if the A443f doesn't have an internal parking pawl, which is kinda typical on medium-duty trucks.. Anyone know if these t-cases are part-time?
2. I didn't realize these engines had EGR (that big pipe wrapping around the rear)
3. The engine mounts look very similar to 1HD/1HZ mounts from an 80-series
4. The starter & alternator look similar to other Toyota units on that time period. There may be a 12V unit that is a bolt-on replacement, or if not I'm sure you could find a way to swap the 'guts' from one into the case of the 24V unit
5. The electronics on the A443F definitely look different than the ones on the A442F. Then again they are probably 24V so would be hard to use anyway.