well, if you don't mind a blower that isn't some monster from a heater system,
This might be interesting. I don't know the exact specs on it, but it is a comair rotron 12v 250mA blower, and so far i'm pretty happy with the one that came in the mail. its very quiet compared to the two 120mm fans i got and seems to move a decent amount of air (no idea what cfm though.) figured i'd share my experience. now i just need to build my waterblock and see how the system fits together.
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My Machine (wip)
XP1800, 256Mb Ram, DVD, 52x CD-R, 40Gb HD, GeForce4 MX 420
Clear Cube
XP2000, 256Mb Ram, 32x CDR, 40Gb HD