I was wondering how hard it would be to change the bolt pattern on my 04 STi from 5x100 to 5x114.3 (05 and 06 pattern). What else do I need to consider when doing this change and whats involved? Thanks!

http://forums.nasioc.com/forums/showthread.php?t=777998

Start reading.

I'll be starting my project tomorrow. :)

Yeah, as you can see from that post, there is a LOT of stuff you have to change. It's a major, pretty expensive project.

If one were going to the trouble, would there be much advantage in tracking down a set of these?

http://www.subaru-sti.co.jp/e/GRN/parts_news/sti05013.html

I think I'm going to do this conversion probally later in the summer or over the winter. I just need to get a bunch of parts now :)