Magnum fi swap with 833 4 speed
Some additional info. Looks like it has to be a passenger side slave cylinder bellhousing, meaning 89-91 (or so) D100/D150 only. Dakota is different. Might be that the D100/D150 bell seems to have a much closer bolt pattern, unlike most that I have seen that don't have anything close. P/N is 4471829.
Here is a link to one on ebay with some pictures.