Mr.R
I'm following this thread with great interest, it's somewhat similar to my ever ongoing project.
Far more interesting than reading about slotting in a 1098 etc into a 851/888.
Can't wait to find out how much power it kicks outs.
On another note I think you need a bigger bore header system to realise the full potential of your motor.
IME a 50mm header system really unleashes the power from a tuned Desmoquatro motor.
Steve R