Ok, I have a '71 Barracuda with factory power disc brakes and rear drums.
I'm going to run manual brakes (aluminum master) with factory front disc brakes and rear disc brakes.
Which brake line set should I order from inline tube if I want to do away with the 2-piece prop valve?
Do I get brake lines & prop valve for a '72 Cuda with manual disc/drum set up?
Thanks in advance!

Ended up ordering a brake line set for a manual drum brake car along with distribution block and adjustable prop valve.

Now what size aluminum master cylinder bore to get?

I usually run the standard single piece dist block, but what you got will work well. 7/8 or 15/16, 1 1/16 at most.. I have a 1.125 on my Dart with no probs, but the B bodies I have done need more pressure. Smaller bore, higher pressure. I have a 1 1/16 that's has only a few miles on it if you need one.

Just finished my brakes on Cuda. Wilwood disc on all four and used a 1-1/16 bore master cylinder. It works great.

Thanks for the input! Much appreciated!