Hey Tink - great thread !!!
Really enjoyed your pics & progress so far. You one step ahead of me with my RT 1979. I been doing some reading on upgrading the brakes. The old ATE's were super seeded by Brembo's in 1980 - I think ? However, a great first step brake upgrade is the replacement of the "undertank" master cylinder with a bar mounted master cyclinder. In so doing you get rid of the cable from the brake to the master under the tank & get a much better brake response with the existing ATE's - make sense ? The bar mounted master connects to a under tank splitter and directly to the front calipers.