If you are looking for a dual circuit MC I don't see the point of installing and maintaining two old hydrocac units. You aren't original any more, so simply use a modern dual circuit MC complete with a vacuum booster bolted to it. Or a Hydrobooster is even better yet if you have power steering too.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-