Just as an fyi, for those buying this, I'd recommend trying to install it without the provided stick-on clip for the underside of the motherboard(mobo), especially if you have a DFI nF4 board. At least in my case, I found that using the stock retraining mechanism on the underneath side of the mobo was a more wise choice than using adhesive to stick the provided one to the bottom of the mobo.
I stuck the longer/thinner bolts provided in the kit up through the bottom of the board through the 2 holes in the plastic retainer on the underside of the mobo. I then used the provided gold-colored hex nuts (the longer ones that look similar to the ones you screw into a case to mount a mobo) to keep the bolts from falling out as I installed the mobo, and to help in securing the bolts from moving too much.
Then to attach the waterblock I used the recommended clip you first mount to the waterblock to push onto the 2 bolts. Instead of using their recommended golden longer hex nuts to secure the waterblock, I instead used a couple of the smaller silver hex nuts found in the radiator mounting bag, which I didn't need. I found that if you have a 5.5mm socket it fits these just about perfectly and was an easy way for me to firmly secure the waterblock to my core. This was installed on an Opteron 165 with the IHS removed and it fits quite well.
Speedfan tells me that my Opty 165 @ 2.52GHz @ 1.44 voltz runs pretty consistantly at 38C, that's in a room with ambient at least 80F+ with a steamy 19" CRT in a smallish room without great ventilation. If you have a cooler room you're most likely to get a much better temp. I also used a small ball-shaped dollop of arctic silver 5 on the center of the core, and let the waterblock's pressure spread the compound naturally.