4 months isn't that old for a forum thread. Plus his question was never answered. I'm about 90% sure that the clockspring doesn't have to be switched out. The connectors are the same on at the end on an 04 as they where since 95. Looking at the wiring diagrams they have the same wiring. I bet the only thing you have to change is the harness plug for the air bag. Just unpin the harness from the old one and put it on the two wires on the air bag. I bet that was the modification that was hinted at, that I read before. I had to do a similar mod when adding an explorer clockspring to mine.
Quality Engineer (Electronics) for Kia Motors
University of Tennessee Electrical Engineering Graduate
2000 XLT 2.5L A/T