Thank you for the reply Lorne, my serial No is not far from yours. R9471.
You are correct about the ratio split that is a plus point for the servo, I suppose one of the reasons for going back to non servo was that it moves the master cylinder nearer the bulkhead. It was a bit close to the exhaust manifold although it hasn't caused any problems because it's got a decent heat shield around it and the manifold is wrapped ,also. heat rises.
I have 4 pot calipers and rear discs and I have never locked out the rear end.
I have what I think is the last original master cylinder in my parts cache and I was (maybe not now) going to do it as a winter project, oh well
DB
