Well I stayed stum those many moons ago when the debate on whether a
RS500 would be a better all round package etc etc etc .... Come the
spring I will be able to tell exactly the difference in lap times.

I was dead set on putting a tuned RG500 motor in the bike ... well
boyz and gurlz ... we are almost there. 570cc, programmable ignition,
31.5mm carbs, port work, custom pipes etc etc

Just finsished dyno'ing the bike. Can you imagine the shock value of
having your RS250 now making as much power and torque as a standard R1
:o)

http://homepage.ntlworld.com/sol_ntl/bike/bikeproject.html

BTW .. still have many stock RS250 parts for sale if anyone is
interested.