Update:
As I mentioned before, I couldn't be there today...so this is all word-of-mouth from Seth. And, the word-of-mouth is good news!
As Gene mentioned, there's a ear on the ZF5 that has to be cut off before the downpipe can be re-installed. I was actually aware of this from the ATS manual, but Seth wasn't...so, the ear still needs to be cut off and the downpipe re-installed. Also, I found out what the difference is between the ZF and the T-19 floor pan inserts. I compared the two, and thought that they looked simiar enough that I decided to just leave the T-19 floor pan in place unless something cropped up and it turned out to need removal. However, the ZF5 is a bit taller than the T-19, so while the ZF fit in place, the top of the tranny is in contact with the bottom of the floor pan insert. So, we get to pull the floor pan insert, I get to drive home without one, and I get to cut a hole in the ZF floor pan for the BW 13-45 shift lever to come through.
But, other than those two things, the truck is done!! I haven't been able to see it myself yet, but according to Seth, he was able to get all of the crossmember bolts put in except for one on the driver's side. That one was one that he would need to drill a hole in the frame for, and he was worried about breaking my fuel lines in the process. I may try and drill the hole myself after I get the truck back, but we'll see what happens. The 13-45 transfer case bolted to the back of the ZF5 just fine, and the rear driveshaft was re-installed. So, other than the lack of a downpipe, the truck could actually be moved right now. The last bits get to be done tomorrow morning, and if time allows, the steering gearbox will hopefully be replaced also (if not, I get to figure out how to pull the Pitman arm myself...not looking forward to that!)
Gene, if memory serves, you took the 13-56 transfer case along with the ZF from the red & gray truck, right? Why didn't you pull the floor pan (that I actually now have)? Also, what plugs and switches are you referring to? I think I actually took care of everything...the reverse light switch is the only switch I know of on the ZF, and I pulled the one off my T-19 to go on there (it was less than a year old; I assume that Seth got it on there). As to the rest, I'm guessing that that has to do with the transfer case change... Also, what slot cutting are you referring to with the transfer case?