[DrKnow65]

49 cfm is huge volume auto2, the problem with it mounted 90' is that is does not ensure flow across the entire surface area of the heat sink, you get little eddies (spelling?) that will trap areas of air that do not realy cycle (like standing at the corner of a building on a windy day, there is a "sweet spot" where the air does not realy blow... you propably know what I mean. You could create a duct of sorts if you have some lexan body clippings laying around, just use a "pocket torch" at a reasonable distance to heat and bend the lexan to the shape you want. You could get creative and make a buck (a block of wood carved to the shape you need) and form the lexan over that. I think you can get lexan sheets from the better hobby shops as the plane guys like to make canopies and stuff out of it.

On the other hand there are a few guys (BrianG) who don't care to use fans on their MM's anyway, so you may not need as much cooling as you think.

Rcaddict, usually the 3 wire fans have a "sensor" wire to feedback the rpm of the fan (tells the controller that it is working). I've seen that the 3 wire fans I have are all red-blue-black, I just clip the blue wire and use the red and black.