That is the adapter that shows me some hope that I may be able to make this work. It says that it converts the early R15#F series transmissions with the shorter input shaft (vs Tacoma era '94+ R150F's) to fit a 22R engine application.
From the info that I have dug up, early version R150F bellhousing is the same length as the w56 bell, and the input shaft between those two transmissions are also the same. So I do not know how adding 15mm to the bellhousing distance, in essence shortening the input shaft 15 mm, is going to work...???
I will probably start another thread on this topic outside of my wanted thread, as most people are not looking here to give technical assistance!
To further add complications, I am really looking to use a diesel conversion specialists adapter that will make the back of a Volkswagen 1.9TDI "ALH" model engine look like a 22R. this includes a nice CNC machined dowel pin located aluminum adapter, and a 6061-T6 billet crankshaft adapter to directly bolt the Toyota 22R flywheel on to the Volkswagen crank with the adapters, as well as the Toyota starter.
ACME Adapters supposedly offers the same adapter to go V6 3.0L bellhousing from a pre-96 R150F etc to the VW diesel, but this requires use of their specially machined flywheel as well, & I have read minor complaints about others saying that their bellhousings are not perfectly aligned on the current center line, and that the diesel conversion specialists adapter is spot-on accurate, and nicer quality. Both are significantly better than the Keltec kit that is offered for Suzuki Samurai's to convert to VW diesel/Toyota trans.
there is yet another adapter from a gas to diesel conversion website, but it seems ridiculously expensive compared to the other options. And it requires a special high torque mini starter that you must buy from them. having some specialized adapters and then being able to use a stock off-the-shelf flywheel and starter is a much better choice for me. pilot bushings or bearings are easy to come by or machine up in any size, so I'm not worried about a custom application for that. The starter and flywheel, yes I am.
Thanks!
Chuck