Intel waterblock

Ok, I'm looking for a northbridge waterblock for a p4p800 (865 Springdale) mobo, these boards have four clips around the northbridge and no holes in the mobo. I've been looking around and the only ones I can find that actually fit with these clips are the DangerDen Maze4 and Z-chipset blocks - are there any others? and if so where can I get them.
Oh and to make things more difficult I'm using 3/8" ID 5/8" OD tubing, so will prob have to get replacement barbs as well.

If the DD are the only ones which is better maze4 or Z-chipset block?

thanks.