I did it on my 00 a few years ago. It's fairly simple. You need the NP271 case for an automatic 4R100, diesel or gas does not matter for the case. Manual cases and 5R110 have a different input shaft. Get a new transmission to transfercase gasket, they like to tear during removal. The boot and shifter are the same between gas and diesel, the linkage and the pivot for the shifter are different.
When I did mine, I used a case from a gasser. Ordered the correct linkage from Ford and made the pivot point work by not using both holes.
This is where it lined up before shifting the pivot forward.
The electrical connection for the light is not the same. I haven't bothered hooking mine up yet but to do it right you need to run two wires up to the cluster. The NP273 connects to the GEM before going to the cluster.
Other than that, the biggest challenge was getting the blankoff plate off the floor of the truck. Ford uses 4 screws and some nasty adhesive that doesn't like to give.
When I did mine, I used a case from a gasser. Ordered the correct linkage from Ford and made the pivot point work by not using both holes.
This is where it lined up before shifting the pivot forward.

The electrical connection for the light is not the same. I haven't bothered hooking mine up yet but to do it right you need to run two wires up to the cluster. The NP273 connects to the GEM before going to the cluster.
Other than that, the biggest challenge was getting the blankoff plate off the floor of the truck. Ford uses 4 screws and some nasty adhesive that doesn't like to give.