I am in the market for a 04 or 05 WR450. Yesterday I rode my buddies 04 with all the free mods and my other buddies corked up no mods 05. The 05 felt weaker than my old xr250. I know that the mods will liven it up but with same mods which will have more power. I assume that the higher compression 04 will but this article in Dirt Rider http://dirtrider.com/tests/offroad/141_0503_wr250_450/ says the 05 has more pep. I really am looking for as much power as I can get without laying out much extra money. What reason does the article have for saying the 05 has more power? I really appriciate the replies.