Some block tips for Socket 478:
DangerDen Maze-3
http://www.dangerden.com/mall/maze3.asp
DangerDen MazeP4
http://www.dangerden.com/mall/mazep4_478.asp
DangerDen also has hold downs which make it possible to use your Maze-2 (for AMD) and Maze-1C on Socket 478. You find it in the last link above.
(I only know DangerDen's stuff so If someone has other alternatives, please step forward)
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Pump:Eheim 1048,
Radiator:LPD radiator 100x150x20mm,
CPU block:DD Maze-2,
GPU block: DD GPU block,
Chipset block:Zalman NB32
AMD XP 1500+, EpoX 8K7A, PoV GF3Ti200
Pic of my YY-cube