Master Cylinder Help

[HAULIN' IT]

Thanks Jocko!
I thought I remembered the front lines were both 1/4" originally on a truck a friend had that we swapped to power discs years ago.
Ironicly, I am planning to adapt/install the (now that you cleared it up) '68-'70 manual drum/drum Master Cylinder on a '39 Ford that my brother & I are working on. It has all 1/4" lines & I want to go to a divided bowl Master Cylinder.
The other important part is the deep cup w/clip on the rod to be sure the rod cant fall out.
The bore of the original Master Cylinder is 1 1/16" so either the inch or 7/8" should work well...I found conflicting specs when searching the size. Take Care, Lorne