On the RAC 75 and Safari cars that Vince posted up earlier in the thread, the front wheel is Cromodora 14" (as per ferrari Dino), and the rear is an aftermarket Campy 14" Rim, (also for Dino). Of course, brake sizing is compromised using these wheels, which is why they're not seen so often on the '76 cars (though Waldegard still used them for Safari in 1976)

David