I've recently acquired an original car from the 1979 British Saloon Car Championship, and we're currently going through the rather 'involved' process of getting an HTP for it.
It's clear that the championship, from 1974 to 82, ran under the Group 1 banner, but we think there's a high likelihood that it also had a set of it's own regulations that allowed for a little more departure from the homologation papers that Gp 1 so firmly adheres to. For eg wheel size.
I've telephoned the MSA and their reply was "yes, we'll have the regs somewhere, but we won't be able to find them, try somewhere else"........Have a nice day!
I wonder whether anyone can shed any light on this matter, or perhaps point me in the right direction.
Many thanks
Mark