Politely, but codswallop! You do see some cars with
these but the cap is wrong, and so is the badge. Caps for later twins have a curved top and some folk fit the curved top cap to earlier cars (I did) as you get a bit more room.
Owners of two speeders often fit
these but the unkind call them pterodactyls, not storks. But I like mine, even if like most, I know it to be a replica.