Here's my 2005 YZ250, I got the inspiration for the retro kit from MXJosh's bike. Thanks Josh! I tore the bike down right to the frame, re greased everything, new top end (Wiseco single ring piston and titanium coated ring), Clarke 3.1 gallon tank(WR petcock), UFO plastics kit, sandblasted and repainted my pipe, Bridgestone 404 on the back, 601 on the front, Vortex 50 tooth rear, renthal o-ring chain, and a Rekluse clutch I bought used off TT classifieds that I haven't installed yet. I built my own step seat using info from a very good post I found here on TT. I love the step and will use one on every seat from now on. I've gone out on a couple rides so far and I'm very happy with the way the bike performs this year. I would like to thank everyone who posts, I had to use the search feature a couple of times during the rebuild to get it back together and I found all the info I needed. Anyone every end up with one bolt that you can't remember where it went, search your bike over and then decided oh well I guess my bike didn't really need that bolt? I had one and when I went to put in my anti-freeze(engine ice) it came pouring out all over the floor. I then remembered why that little bolt had a copper washer on it!