If anyone is interested, here is what I did....
I ordered Late Great Chevy (Eckler's) dual-reservoir conversion kit. They only listed one for manual, drum brakes. As described in the posts above, the lines that came in the kit will require some tweaking to work with my factory power brake '64. The kit is nice and contains all the lines, proportioning valve and a nice bracket for the valve that uses the MC's mounting studs.
The kit came with a manual brake MC, too. As pointed out above, the power-brake rod from the booster is going to be too short. I figured I would make that up somehow. BUT, I also learned that the bore on the MC cylinder is bigger on a manual MC to create more pressure. So I decided to exchange the manual MC for a dual-reservoir, power-brake MC. It was only $4 more, but I had to pay return shipping on the other one so I wish I had caught that up front.
In retrospect, I should have just gotten the whole shootin' match. It would have been cheaper to buy a manual-to-power conversion kit that came with the booster, MC and lines. BUT, at the time I bought my booster I didn't realize the MC was bad as well. So I bought a kit without the booster.
Now I have a pile of new parts to install!