It's on the side of the throttle body, and only held on by two bolts. I took a quick look and it seems the only adjustment that even might need to be made during installation would be to the accelerator cable, so I'll rank it back at easiest of the three replacements (if only in effort and not necessarily impact on the wallet anyway)
"Throttle Position" (TP) sensor - Chapter 6 in the downloadable VX repair manual.