I don't want to hijack this thread, but here are a couple helpful links from CPP showing cutaways and plumbing of the booster, mc, and proportioning valve. All the components need to be able to play well together to have safe braking. I assume CPP has somebody working for them that is smarter than me that "engineered" all these components to work well together.

http://www.classicperform.com/Instructions/PDF/PVK.pdf
This link shows the plumbing of the corvette style MC with the combination valve.

http://www.classicperform.com/tech_articles/PDF/Dems_DA_Brakes_3.pdf
This link has some nice cutaways, if you ever wondered what was inside.

There are many things to consider when installing a brake system. Improper plumbing could be responcible for loss of control in a panic stop, so it is important to know how every component works, independantly and collectively if one chooses to "reinvent the wheel".