I’ll go with:

Pratt & Whitney R-985-AN14 (B) “Wasp Jr.” Cylinder Assembly.

And when they were assembling the head to the cylinder, they let the head wrench slip and crack the lower cooling fin. That’s an aftermarket plug lead too. I say the thing is mounted on an aircraft that’s more show than work, as well. I might venture to say there is more than one engine mounted on the plane. But that’s stretching it a bit.

BTW - How do you like that Digital Rebel XT?

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1980 300D - Veggie Burner !