If you find one and don't happen to need the bellhousing, I'm needing a 22RTE bellhousing!
also, if you cannot find the 151 turbo transmission you are looking for, you can use a 95& earlier R150F and swap the countershaft cluster and 1 - 3 gears to get the same ratios as the turbo trans. There are aftermarket versions of the countershaft cluster for sale on eBay for a pretty reasonable price, and I believe you can still get them from Toyota, OEM. Second and third gears are the same as an ax15 from a Dakota or Jeep as well.
the only thing this does not get you is the special tail housing to mate with the 4-cylinder gear drive transfer cases, but you can get an adapter kit from Marlin for that.
Then if you are needing to mate to a 22R, advance adapters makes the kit then I think you are already referring to, with the 15 mm thick adapter plate to mount a 22R w56 bellhousing, and uses an extended pilot bushing to compensate for pushing the input shaft away from the engine that same amount.
I'm trying to use a Diesel Conversion Specialists W56/22R to VW ALH1.9 TDI engine adapter, and the Advance Adapters kit to mate the 22R/W56 bell to the R150/151 will not work as it requires an extended pilot bushing, not compatible with the extended crank hub pilot bearing register on the Diesel Conversion Specialists kit