I have just been looking through the for sale adds and saw at least 3 what I think are SIIs being sold as SIIAs. I may be getting a bit Anoraky but I am sure that the SIIA came into being due to a change in lighting regs in America in, I think The late sixties. The difference between the two is only the headlights, they moved them onto the wings.Sorry if I sound a bit pedantic. If Iv got it wrong please tell me.