No my 93 does not have ABS. I had the Load Sensing Proportioning Valve, but that is not hooked up since I now have a 4-link suspension in back.
2005 ABS has its own computer, and to my benefit it is not on the Can Bus, so it is not telling the other computers it is not there. So far I don't have a problem.
But you do have a problem, of sorts. As you have a dash that expects ABS responses, it should illuminate wo a response. In 99 there were three lights for the ABS depending on what was happening. In 2003 One light would warn of no signal from ABS. If you car has to be inspected, it won't pass with out ABS functioning, just not safe.
As your Tracker has ABS, what is the difference between it and the XL7? Your system may supply what is needed for the dash to be happy.
This is why having FSM's makes swapping much easier.