[Roadsters] Rear Brake Swap

[RWM]

Any update to this vintage 1999 thread?

http://www.team.net/html/datsun-roadsters/1999-11/msg00700.html

Are there functional, plug-and-play substitutions for the late roadster 
3/4" rear wheel cylinders from other period Datsun brake parts?

Such as rear wheel cylinders from the 1200, B210, 510, 617, 710?

Did the debate over how to get more braking action at the rear (by using 
either 11/16 or 13/16 cylinders) ever conclude?

Thanks.

- Bob Mann, '68 2000 Solex