How can i identify an XC Allan Moffat Special. I need the specifics: SIDO code and other unique features.?

I'm in the processing of buying an XC Falcon and just wondering whether it's an Allan Moffat Special. The paint codes match up as well as the engine codes but im a little unsure as its missing the R/Pack GT radiator support tag. How can i be sure as its in pretty bad shape and looks like the bonnet is not original.