You asked for a pic of my water distribution block.
Two inlets on each end, 1/2" and 7/16" From left to right, 1- 5/16th to jet on top of exhaust manifold, 1-1/2" to cooling on bottom of manifold, 4-3/8" to cyllinder, 1-3/8" to waterbox (with restricter). Hope this helps.