Hi Rik.
I think I will apply to DVLA for a age related reg for my M23. I have the frame info from VMCC already and can get a dating letter. The frame info states it was designated as a M23.
Like you say, it is better to be registered on correct frame number, I have a JM23 engine but it needs work. Still, a empire star is a good BSA to have although I will not restore it in anyway.
