If toyota diesel engines wernt so rare that would be a awesome swap.
But yea maybe a Toyota leaf SPOA for running toy axles.
Toyota to samurai steering, or toy power steering conversions with the toy highsteer kit all as one.

good thoughts but any samurai that's seriously crawling is running yota's or beefier soooooooo the TOY hi steer kit works perfectly as is.  and the IFS box is super easy to throw on there.  for $200 more you can make your own hydro assist.