well if you're looking to use an xr 650 engine....i know they are 250s but it might help with ideas....good luck with it and keep us updated.....
http://www.xlintperformance.com/XLenginedRoadRacers.htm
the rest of the sight is really cool if you are into old honda xl
"Ride Fast and Take Chances"
http://www.xlintperformance.com/XLenginedRoadRacers.htm
the rest of the sight is really cool if you are into old honda xl
"Ride Fast and Take Chances"