I decided to go with non-power assist brakes, so I drove across town to Baer and bought one of their 15/16" bore master cylinders, proportioning valve, and banjo lines. I spent some time in a pro-touring type car with manual brakes a while back, and was surprised how good the brakes felt and performed. I kinda splurged on these pieces, but I saved by not going with a hydroboost unit.
The plate behind the MC is used to index the T56 bell housing without having to remove the front cover of the transmission. Apparently, the bell housing doesn't have to be off by much to create problems, so rather than just slapping everything together when the time comes, I'll give my dial indicator a workout.