These shrouds fit over the top of the engine cyclinder heads and, through air directed through the cooling holes cut in the top cowl, cool the heads in flight.
The shrouds need to have a tight fit to the top cowl and will require trimming back to ensure they fit neatly inside the cowl line.
The 1″ wide rubber edging will be glued and riveted to ensure it provides a tight seal.
Jersey Sherwood Ranger 
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