1st, if you want those lines from CJ, make sure you check that they have them in stock. I waited 4 weeks of them saying they are on order. I finally canceled the order. Buy your lines from
Inline Tube - Preformed Stainless & OEM Brake Line Sets or
Fine Lines - Brake Lines. I bought mine from Fine Lines for another vehicle I was doing.
As far as the prop valve or dist block. Disk brakes have the prop valve & drum has the dist block. When I did my dual master cylinder change, (drum brakes), I reused the block. You will have to use a plug to close one of the openings in the block that will not be used. Make sure you use an inverted flare plug.
I bought my ms from a parts store and the ms lines from the same place. Did my job for around $35. You'll need a tube bender.