Well I finally installed the block.
Performing exactly the same as my C5, which funnily enough performed exactly the same as my Surge.
Reasonably happy, as it cost less to make than the C5, and is performing as well.
However I have to find what is limiting the cooling in the system, because I think I should have had some drop between all those blocks.
Using a LA with 2x Papst fans in push pull config (Quiet) and an Ehim 1048.
Comments? This is actually my first bolt together block. All the holes are counter sunk etc, but the photos I took of them are crap. I really need to learn how to use the $1000 cam my dad bought.