So I have designed a bracket which will adapt the Asetek all in one units to the nVidia GPU. 
I was considering making it myself or I can have a local machine shop laser cut it. 
The only think left to do when you get it is to cut dremel out feet of the OEM bracket and glue this adaptor on it with epoxy. (+ screws and nuts for $1 at home depot) 
The problem is that the cost will depend on the volume so if I get enough interest for it, I would go with the precision lasered part. 
  
Editing post to show pic tutorial.
 
What you need?
1) The custom adapter bracket. Cost is $7 shipping included
2) A spare OEM Asetek bracket (one that comes from an H50, H70, Antec 620 or Antec 920)
3) Metal Epoxy. These are cheap find any one you like at your hardware store
4) 4 x #3 or #2 screws with length of 1-1/4" with the matching nut. Also $0.98 at HomeDepot for a set of 8 screw+nut.
Optionally you can go with a #4-40 but it will require a bit more work if you choose this since at this diameter, the screw interferes with the OEM bracket outer ring.
5) A dremel to cut the feet of the original OEM bracket.
6) A sheet of rough sanding paper. Any grit will do. It is just to remove the paint from the OEM bracket. It is optional but it sticks better this way.
7) A tube of your favorite TIM if you do not want to use the one which comes with your cooler.
 
Total cost of the mod:
Bracket $7
Epoxy $5
Screws $1
Antec Kuhler 620 $56
Cuting disk for the Dremel $2
=$71!
  

What to do?
 
A) Take the sanding paper and rub the custom bracket face you have choosen to stick to the OEM bracket
B) Sand the top of the OEM bracket lightly until the black paint is gone from the top surface of the narrow line.
 
Note that A and B are really optional. We are not going to rely on the epoxy to maintain pressure on the GPU anyway.
C) Follow the instruction on your tube of epoxy and spread the epoxy on the top surface of the OEM bracket you have just sanded and stick it to the adapter bracket. Wait for at least 30min. 24hrs to be 100% sure.

D) take the dremel and use the metal cutting disk to cut off the feet of the OEM bracket.
That's it! your bracket is made.
 

E) Remove the the cover of you graphic card. and take apart the "Vapor chamber" heatsink. There are quite a few videos on youtube showing you how to do it if you don't already know. On the GTX 580, I just had to remove 7 screws all around the side of the cover and then remove the 4 screws from the back which had springs on them.
F) Prep the surface of the GPU with IPA and the TIM you want to use.
G) Stick the 4 screws through the 4 screw locations from the back of the card and drop the bracket on the screws. Loosely start the nuts on the screw tread. 

H) Install the cooler per the regular Asetek procedure by dropping it down and twisting it into the mechanism. Tighten the screw/nut down and you are done!

Yeah, I am just testing the waters right now. If the interest is huge and I get in the hundreds of units, these would go down to <$10 so it makes a huge difference.

Sure, don't get yourself banned though.

This would be awesome.  The Asetek dual rad (assuming you get one and make an adapter for it) + your adapter onto my GTX 480 with four Delta 120mm x 38mm fans.  

I'm in for two

Now that I am thinking about it... are we going to need standoffs or something to insulate the PCB from the brackets?

Looking for them as it's too damn hot to go hauling anything around at the moment. 
http://www.deepcoolglobal.com/product/V6000/
shows GTX 470/480 at 58mm  would mean they have the same mounting holes?
 
this ones similar too.
http://www.swiftech.com/mountingkitgt400.aspx
 
will be thursday before I can pop the thing apart and have a good look.

I don't see how people with multiple graphics cards are going to find room and have enough slack in the tubing to mount more than one of these.
 
All this trouble and added cost so that you can modify an "Easy" and "Inexpensive" cooling solution. I would think after it's all said and done a custom loop would be substantially better than this. 

rafale

I honestly do not think so. I agree that the tubings will take up a lot of room and I will have to tweak a bit. Costwise the whole setup is cheaper than a single GPU waterblock. It is easier to install with lower risk of leaks and the fact that I will get all independant loops will be an advantage. I really have been turned off by the maintenance involved with custom loops. It will come down to about $85 per GPU at the most in my case. It's almost as cheap as a third party air cooler.

 
It's actually cheaper than some air coolers. Of course Kody brings up my other point... where am I going to put two of these? My rear fan is a 140mm unit, as is the bottom intake unit... and two of the 3 top 120mm grills will be used by the H100/2011C CPU cooler.
 
I guess I am better off at most in being able to find a solution given that I have an 800D.
 
Ideas welcome!

This isn't intended to be a cure all for every application. For someone with space to spare like me, it is a possible option to running a custom WC loop with a multi-GPU setup. On the other hand, for people with a single GPU, this may be a dream come through, especially in systems with poor airflow.
 
Besides, it's not like anyone is trying to market a product here.

kody7839

mistermister

This isn't intended to be a cure all for every application. For someone with space to spare like me, it is a possible option to running a custom WC loop with a multi-GPU setup. On the other hand, for people with a single GPU, this may be a dream come through, especially in systems with poor airflow.

Besides, it's not like anyone is trying to market a product here.

Understood.

But you must also remember that other companies have already offered this type of product before, so this is nothing new.  

 
No, but said products are either hard to come by or no longer exist. For the most part, they also cost more.

Looks like there is interest for only about 10 of these huh?

http://forums.evga.com/fb.ashx?m=1082996
 
 

Did you see that post I linked Raf?

Wait, you have to glue this?