im in the process of buying a wr450, i am trying to get a leftover 07. but my friend has a buddy that is selling his 04 for 2500. the 07 would run about 6500. this would be my first big dirtbike. I have been surfing up info on the 07 line up and decided that the wr is the way to go. but im not sure if i should spend the extra 4k? I do want to get some 17 inch rims and run motard for shts and giggles. maby hit the track. but i really havent searched too much about the 04. i know the frame is different and some little stuff. but are they 2 totally diff bikes? is it worth the extra cash? i will be beating on it might be nice not to get someone elses headach. Help me out here what should i do? the bike fever has started early this year.