Hi Dane, I find it interesting how the caliper dates are well in advance of our respective cars build dates .
I may stand corrected on this, but I believe that these calipers were made in the UK, meaning production lead times would me much longer than for Australian made items.
Girlock was brought about by the merging of Girling & Lockheed.
I know that the later (Commodore style) aluminium calipers were made here after they set up local production.
Datto ?
Dr Terry