I think Feets used cut down rotors ?

On the Torana I used custom billet steel hubs from Oz.

I had a spare set of discs off an Aussie Valiant laying around and they use a 2 piece rotor on them, and after a little mocking up looks like a very simple conversion to big brakes when I get around to building another one of them. (They actually use the same caliper bolt spacing as Holden...probably since PBR calipers were used on many different cars there.)