1965 Valiant brake woes

I can see them on the inside firewall, under the dash. They look to be in good shape.

I've seen pics where the distribution block is mounted low, on a frame rail. I've seen some on the inner fender. The prop valve is on the inner fender, near the m/c.
If I may have to fab a couple of new lines, does it matter where I put the distribution block? Is on the inner fender OK, keeping the lines going FROM the prop valve to the wheels and maybe just replacing the lines from the m/c to the block?