I could not help but to purchase 2 of Paul Vodrazka's Phaze II waterblocks after seeing them for my dual AXP rig.
Link
Paul was even kind enough to include 2 P4 adapters, (just in case I wander to the dark side

) The blocks are indeed the work of a true craftsman.
I also received an EPoX 8K5A2+ today, so I think that I will install one of the Phaze II's in my test box to see what it will do with a factory unlocked MP 2100+. I already removed the Spir@l block and replaced it with a Phaze II. I immediately noticed more flow into my reservoir compared to the Spir@l, which surprises me. I am running a shrouded heater core and 500GPH Danner with 3/8" Tygon.
Since the EPoX reads the temp from the core, I will not bother with installing a thermal probe. I will get busy now and post back later with some temps. If this block performs as well as it looks and flows......