I guess if you don't notice the acorn nuts in the center of a WIDE valve cover, a really wide fanbelt in wide pulleys, a foot operated starter, big road draft tube hanging off the side of the engine, round rochester one barrell carb, side cover that covers the whole side of the engine including spark plugs and a few other items they do look alike. I think Stevie Wonder could tell the differance at 50 paces on a moonless night.