Land Cruiser Transfer Case Woes

In an attempt to fix my malfunctioning HF1A Part Time transfer case I purchased a HF2A full time case and installed a Slee OffRoad part time kit in it.
Unfortunately we discovered that the new transfer case would not mate to my existing transmission due to differences in the input shaft splines as well as the mating surface.

Pinion Gear Removed

Pinion Gear Removed

HF2A Housing removed to get to Pinion Gear

HF2A Housing removed to get to Pinion Gear

Land Cruiser 80 Series HF1A Part-Time Transfer Case Versus HF2A Full-Time Transfer Case

Land Cruiser 80 Series HF1A Part-Time Transfer Case Versus HF2A Full-Time Transfer Case