Well, thing is that the previous owner rode the bike pretty hard and it failed on him so he had to switch the gearbox. He probably took the '00 gearbox because the '98 and '99 gearbox has the problem with loosing 2nd (comes from factory.. but got fixed for the '00 r1) if you (ab)use the bike harder than normal.
Thanks! Will get a lot more media (pictures/videos) from it as soon as the season starts.. or if I'm going to Spain on Thursday next week. :yesnod