G'day Maurice.

I'd just use a LV30 or a VK30

The original early sixties motor looks like it could be a LV30 from Barclay Trading Company as they imported motors
from USA and sold to other manufacturers in the early sixties.

https://www.outdoorking-forum.com.a...ott-bonnar-35-with-lauson-4-stroke.html.

Cheers
Max.

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