You guys don't seem familiar with the DangerDen Maze 2.2. I should have been a little more clear. The nylon bolts hold the coldplate to the CPU. There are steel bolts holding the coldplate and block together with the pelts between them.
Yeah here is a link to my pump, check it out:
http://www.pumpworld.net/prod8.htm#3B-500
500gph @ 1 foot, 300gph @5 feet. Quieter than my MagDrive.