Had to share

[f6john]

Wish I knew more! Serk???

[Serk]

Did a quick reverse image search and about all I could find was that other people have been trying to find more about this, unsuccessfully, for years...

[f6john]

Well some things must remain a mystery!

[old2soon]

    Times 2 4 cylinder dual over head cam somethings! 1000  1200 CC range fer both engines? 200 400 H P? Looks FANTASTIC!  That'll git the gear head juices flowing!  RIDE SAFE.