single circuit girling brakes
 

Does anyone have any experience upgrading the early Girling braking system as fitted to my 409. four pot calipers? vented disks? Dual circuit?

Here you go

COOPERCRAFT Products

Thanks Greg

Any ideas for a dual circuit master cylinder and servos?

single circuit girling brakes
 

You could also try BG developments.
They cast and machined new discs for 408 at a time Bristol cars had none.
tey are excellent and to original spec.
David