I'm most of the way through installing the CPP disc brake upgrade on a 1950 1300 (Cdn) 1/2 ton, and I plan on installing the dual master cylinder (manual brake version) over the weekend.
Things have gone pretty smoothly - I've got a few pages on my blog summarizing what I've been up to.
Main thing is my 16" wheels won't clear the callipers, so I'm looking at replacements.
