I'd like to gain a little torque on my C72 and upgrade it to a 305.
I've found that the upper crankcase has to be redesigned to accommodate the 305 cylinders, which isn't technically complicated.
I think it's better to fit a 305 cylinder head as well.
Did you carry out this modification, using which parts, and is the result worth the work?
Thank you for your advice.
Upgrade Dream 250 to 305 ?
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