You may want to look into an open driveline. Perhaps look at a 1 ton or greater 4-spd with the open driveline connection. Then probably a new center carrier and short driveshaft from a driveshaft center. Otherwise, follow my
post. There are no readily available parts.
The 4spd will only give you a lower gear. Top gear is still 1:1 or direct.
Not sure, but the bellhousing may be different between the two as well as the clutch size.
