Gee Thanks Brumby, I do appreciate the help. I have fossicked around some more and found a DARK cowling that has "power plus" on it. So I will check the heads to see where it belongs & post my results for others benefit. I can understand the numbers now. The painted one has 108731-10143. 1973 right? Now I can check the rest tomorrow after church.smile.... So one more question to finish me off, how will I know when I get a VC Mustang Sports like you showed us in your VC Mustang posts? (Keep me informed of parts that are holding you up on a restoration and I will try to help.) regards.