I got newegg to take it back. I ordered an H40 from corsair. I don't have to worry about any clearance and have one less fan to worry about.
Well -- good luck with that H40, then. I was going to add that there's absolutely nothing wrong with using a single "puller" fan -- ideally, your 120x38mm exhaust fan, like a Panaflo/NMB-MAT 0.40A fan.
Somebody might reply to this, "Spare us, Old-Timer! Nobody wastes time with that Ducting S*** anymore!" But I'll say it anyway.
You can improve your cooler's potential to the max by ducting it with little constructions you can make with some foam art-board, an Xacto knife and glue from the hobby-shop formulated specifically for foam . . . art-board . . .
If the case is slightly pressurized, the cooling from a well-ducted heatpipe-tower and the exhaust-fan should reach the cooler's optimum.
The Corsair RAM kits -- like my DDR2 "DHX" kit in another machine -- have tall heatsinks. My G.SKILL Ripjaws have nice sinks, but they fit anyway with about 1 or 2 mm of clearance from the bottom of a fan of the recommended size, positioned on the cooler as intended.
But there are several options that can be exhausted. You just chose to pick the "cooler-replacement" option.
I just bought two Hyper 212+ coolers for about $25 each, and have high expectations for them, on some LGA-775 mATX systems with mild over-clocks and the Intel stock cooler.