This is the way the real Jungmeister did it. I cannot document the ring at the fusealge, it may have been fastened to the engine, so that everything would vibrate together.

In my research into a Kinner engine, one of the technical drawings showed that a rocker arm cover bolt was a long stud or standoff, on a number of the cylinders; presumably to bolt the cowl to.

If this is going to be a internal combustion engine airplane, you would probably be better off with a system like MinFlyer suggested. The vibration will likely tear your dummy engine up.

Les