Hey guys i need some advice. I have a 2000 WR 400 and i went riding this past weekend some some friends as hollister hills, and we were all racing up some hills, and i was doing fine till i road my brothers YZ250, now after riding his bike i want something more powerful, but i love my WR, i have a lot of mods on the wr but just want some more power, i have been looking at a 2002 Yz 250 to buy but don't really have the money to do it. What should i do is there any upgrades i can do, i have already had the grey wire mod, pipes, jetting, sprokets, timing, all modified to run like a YZF. Can anyone else recommend anything,What about rebuilding, and boring out? Please Help!!! Thanks is advance.