Hey Ken,
the text says there are 15 "worldwide known" M46 option cars. But it does not state any source for that number, nor any info about who takes care of the registries.
Maybe there are only 15 cars known TO THEM, or there are only 15 cars officially registered. But registered by whom? By Mopar?
Anyway, it is certain that this option is a damn rare sight. And Al, you can be proud to own one.
Cheers!