Any way to build a 900 CC 45 ? I have a person who says they did.
There is a combination possible with some overhead valve configuration that is adaptable to the 45 carters. Friend of mine also has an engine like that in the works. Its called a Magnum for some reason, and a google search directed me back to this very forum: https://www.sscycle.com/tech/viewtopic.php?f=6&t=12134