Weber and Dellorto Jetting calculator found.

[v6pop]

Just came across this and downloaded it from a web page and thought it may be of interest if your thinking of fitting Weber or Dellorto carbs to your OSF.

 

http://www.jonny69.co.uk/carbcalc/

 

Put in your engine size,peak power rpm,tune for power or flexibilty option,and hit the button and it lists all the jet sizes you need.....sounds to easy but should get you on the road.