Just remember that you are NOT restricted to VX and/or Troopers.

All Isuzu 97+ w/V6 4x4 will match up, and I saw several on a quick search I did for myself <$750.
Make sure it has a torque converter, and you replace all fluid and fliters.

Good luck, and it can be done on a long day/within a weekend. Get in there and help, learn about your rig, it is rather therapeutic.