Hmm, i was going to go the opposite way... I have a Sunon fan on my mc462 right now and hopefully the Delta should be here any day. I was going to take the stock psu fan and toss it, then put the Sunon in there. I think the Sunon 80mm fans put out about 46cfm, I'm guessing the one in my no-name psu (Deer something or another) is around 26cfm. If I could find a place that sells the Deltas (68cfm) I'd buy one of them and put in there. That sob puts out some heat!
This cooling crap is addictive...