Dual reservoir master cylinder upgrade

[phish1270]

Has anyone upgraded from the single reservoir master to a dual res. master on an early model A-body? I have a '65 Barracuda & I just got a kit off ebay with the new master, fitting kit & an adjustable proportioning valve. I am having some trouble following the instructions & was looking for some first hand help, advice, pointers, tips, whatever. Any help at all would be greatly appreciated. I understand how important this upgrade is but it seems beyond my abilities & I have been working on cars for over 20 years. Do I even need an adjustable proportioning valve? Where should I mount it? How should I plumb it? How do you adjust them, never used one before? Are there any surprises or tricks I should know about? Any advice on tubing lengths needed, parts to buy? Thanks

 

[65Valiant310]

Route the brake line coming from the rear of the car, to the front bowl the master cylinderer
I used a union for the front brakes which then runs to the rear bowl of the master cylinder
Adjustable prop valve I mounted on the inner fender, and can adjust my rear brake bias as much as I want
Cant remember what length of lines I used but got it all at the local hardware store

 

[phish1270]

How do I know if these are the newer style wheel cylinders? 1 of them looks new & has a part # on it but the 3 attached below look older. Does anyone know if these are safe to use for the master swap or do they need to be replaced? Thanks.