I went and climbed under the truck again to take a look. I was going by memory, but my memory isn't what it used to be... apparently. There's no PTO port on my T-case (just on the transmission), and the circle on the passenger side on the rear is blank.
That spells NP200 alright.
Sorry for the false set of parameters, but thanks for helping me sort it out.
I am wrestling with the windshield wipers at the moment.