Identification of F15 2WD?

[hrpearce]

Looks like a nice project Tony I haven't seen rims like that on any truck I've come across.
They certainly went to a lot of trouble to set up the spreader drive, all the ones around here had a drive cog bolted to extension nuts on the rear wheel and an over centre dog clutch to engage the spreader.
I would like to see some photos from underneath to see all the drivetrain