If your powerhead is just rebuilt at Ocean Racing by Geoff Purves I could be very interested as I have known Geoff for nearly 25 Yrs !
To be fair I don't know much about my engine, I have just brought it on the back of a Frode 21 and it is ex ski race. All that I can tell you is that it starts on the button and sounds as crackly as I always remember. Its missing the flywheel cover, the head bolts are a little rusty the wiring is good, spark plugs run clean. Will swap complete with fuel pump, (Bosch type). Alternatively what sort of money are you after for your powerhead as I would consider an outright purchase?