Putting the OD from a Saganaw 3 speed on a Saganaw 4 speed is an option but as Don stated those solenoids are one of a kind, rare, and expensive now. Also shifting a 4 speed from the column is a whole other set of problems. Just the possible driver error issue of shifting into reverse while still in OD could wreck it all. A good option would be a Borg T-85 3 speed OD. The one I have has the R-11 OD with 4 plantaries. I got it cheap on eBay. The T-85 is as close as you get to bullet proof. They were used in some late '50s to early '60s Studes and lots of Ford pickups, vans and Broncos I think. All I have seen have the tall Ford bolt pattern. You may have to drill holes or build an adapter. Mine is going in my '53 pickup but I'm not mentioning the engine here.
