I didn't swap the tracks putting in 98 explorer seats in my 2000 reg cab. I just cut off the legs that go to the inside rear of each seat. and drill new holes for the other rear legs. You could probably cut the legs and weld a bracket to bolt to the existing hole. You could also weld an extension to the other rear leg to meet the bolt hole. Also you have make the inner front leg holes wider to accommodate your factory bolts.
With this you can keep the electric seat tracks!
I got mine for 50 bucks too! Did you go to a junkyard that allows you to pull them yourself?
Quality Engineer (Electronics) for Kia Motors
University of Tennessee Electrical Engineering Graduate
2000 XLT 2.5L A/T