JohnBuckner,
Yes, it has four bolts on the head and....
RLDIII,
Yes, it does have very short fins on the head.

When I bought this plane, it had a lot of fuel "stains" all over the engine and muffler. I cleaned it all off and it looks great but I did wonder about leakage from the looks of it.
I didn't want to buy an expensive engine to learn on and I was just concerned about this one giving me trouble during flying lessons. If it stays running, I'll be happy.

The Dodger