(oops! 92sidekick4x4 beat me to it! LOL)
If all else fails, I'd rush down to the local junkyard and pick one off a dead truck.
If you have a "U-Remove-It" kind of place (we have one called "U Wrench It"), you can probably get it for less than twenty bucks.
Most junkyard Trackers suffer from "death by no motor oil", (symptom: thrown rod) so something like a motor mount should be in pretty good shape.