Saginaw, 4 turn, big bore, large input shaft size, variable. The plate for the frame can be made easy but the measurements are what you really pay for when buying them. They can be had fairly cheap. Do not forget to box in the opposite side of the frame when you do it. Also support/add material under the hole you drill through the frame. It WILL crack there eventually. IH8MUD.com should have good info on the conversion and sources for the plates. I got mine from BTB ages ago. and there may be cheaper out there
not the best view but
Scott
