There is a transmission shop in Redding, Ca. that shows a couple on his site. Called him and was going to see what he had, but didn`t call back. that was 3 months back. I need to rattle his cage again.
If you come across one I`d be interested.
Saw a thread on some forum a few years back where the guy plumbed in a pump and filter to circulate the oil to extend the life of it.
I was looking for it but can`t find it now.
I talked to a guy at gear vendor after I dragged home the one I got at PNP. he said you can use a 2 speed shifter, and not wire in all the wiring and switches...etc.
There is a YT Vid of a guy shifting a Dodge 12V Diesel with the 2 spd shifter. Looks pretty slick.
Goat