Wiring is a piece of cake and you don't have to do anything with the TOD computer 'cept unplug it if you don't want the TOD dash lights. There are two connectors on the manual TC. One is speed sensor and the other is 2wd - 4wd indicator switch which is not used unless you do something custom.
As far as the exhaust goes I already had mine removed because I'd pulled the trans. I think the prop shaft comes off first though and then likely you'll need to pull the passenger side exhaust.