Well, not really. But we found this project while practicing a little work avoidance (ah, that would be research) here at the KITPLANES world headquarters. It is a nine-cylinder radial engine made up of Honda XR600 dirtbike cylinders and heads. These are single overhead-cam engines, requiring a clever multi-chain cam drive system. The case is CNC-machined from billet aluminum. The workmanship, by Aussie Ian Drysdale, is evidently amazing.
For more on the project, visit the Kneesliders website.
Sorry to say, this amazing engine is destined not for an aircraft but an air boat.