Oops, i replied to Bigben's radius thread in response to his mention of the johnson pump, before seeing this thread. oh well.
The pump i picked up at a local surplus dealer (for $20 USD) is the exact model bigben linked to - the co30p5-1. Mine's kind of noisy, emitting a high pitched whine, but would be next to inaudible inside a case with a few fans running.
Free-flow testing (pumping a 5gal bucket) seemed to yield results better than the spec sheet quoted - the bucket was filled in less than 30 seconds, though i wasn't exactly looking at a stopwatch.
My primary concern is wether or not this will introduce RF noise into the 12v line if it's not brushless, which Stepback's post indicates. an oscilloscope would be the best way to go, though i can't think of any I might have direct access to.
And, as I said, I do know of (er, knew of, a few months ago, when i bought mine) a Twin Cities, MN location where they can be had for $20. I can check their stock if anyone's interested...
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