There was only one hole at the top of the transfer case for the transmission shift rod,and then the input.I will be plugging that hole.As for connecting the transmission I was thinking of cutting off a piece of the tailshaft of the transmission then welding that to a u joint that fits the diesel transmission.Then modify the transfer case shifter so it sits where it is supposed to.
Welding directly to a U-Joint is something i wouldnt recommend. What you want is a Yoke to fit your U-Joint. Put the Yoke on a Lathe and cut a pocket in the center, so that the "Stub" is an Interference Fit before welding. As far as balance goes, that's something you'll have to work with
Also keep in mind that the Transfer Case Shifter will be harder to modify, it's actually a Little tiny Stub of a Shifter, with a large chunk of rubber mounted to it, and a sheet metal "shifter" is slipped over the rubber mold and held in place with an E-Clip
It's no Steel Rod like the Transfer Case Shifters you're used to
I tore apart a few of em and built a custom T-Case Shifter for my Diesel, Tearing them apart is a challenge. You have to remove the E-Clip, then heat the Sheet Metal Casing with a Torch to seperate the glue that bonds the rubber to the metal. While twisting the casing to pull it off.