My next crazy project.

Here is a 450e:

20211024_234508.jpg

Turn it 45° and then sling the oil up the push rod tubes to the overhead rockers. (it probably slings it up there by design already being overhead valves.)

Not fighting gravity so much.

Then you make up a 45° new carb manifold to keep the carb running level.

20211025_001112.jpg

Then you are good to go.