I recently scored a project bike with two 1948 HD Cylinder Heads modified to fit a knuckle lower on knuckle cylinders.
The heads are very unique and each have a modified intake manifold to accomodate a linkert carb. They currently have MR-4s mounted on each head. My question is this: The heads are so nice, they almost look as if they were cast that way, complete with cooling fins. The color and patina of the aluminum is dead on match for the heads. I think these may be George Smith heads, but how can I verify?