Hi, I traded a rusted out car body for this flathead for my U.S. Mark-II project. It was missing its heads. I thought it was a Mercury and decided to take a chance that it had the 4" stroke. I have been trying to ID the engine and have a few interesting things that have shown up. This was in the "middle of nowhere" Georgia. It appears to be a 1954 Canadian Mercury engine. It has a cast iron intake, teapot carb, aluminum front cover, pastel green paint and odd casting numbers. Does anyone have any more information on these late Canadian engines? See the pictures. Am I right in thinking this is a 1954 Flathead? The owner of the shed this came from bought the place with the engine inside. The heads were stolen before he closed on the property. He said that they were marked, Mercury. That is all he knew. Thanks.