I recently sent a complete K0 motor 11,xxx to Mark Paris (Hondaman) for a rebuild. He disassembled and sent me an email stating that the motor had a very early sandcast head. I sent him the link to MarkB’s restoration of #97 showing the head from E100 and he said it is the same type of head. So instead of burying an early head into a later motor, I thought I would look for an appropriate head for my motor and save or sell the earlier less than E563 head.
