Longest crossfire bridge ?

Howdy guys.
Ive got a huge overheating problem ,
I have two of these big dogs running next to each other :
http://www.asus.com/Graphics_Cards/A...DCII2DI4S2GD5/

I have the storm trooper pc case , theres ample cooling around these , the problem is that the second card is blocking air for the 1st card so its overheating in 5 minutes flat.

So I have 2 options , either move the 2nd card to the 3rd PCIE slot,
or get water cooling.

My problem is that the longest ATI Crossfire cable I can get my hands on , is 10cm , is too short by about 1 centimeter.

I have the asus p8z68-v pro gen3 motherboard.

Do any of you guys know where I can get a longer Cross Fire bridge ?

All my google searches have come up empty handed , showing only SLI cables at 120mm , and i need Crossfire , not sli cables.

If I cant find a cross fire cable , is there anything else you guys can recommend ?
Ive tried putting a rubber spacer between the two cards to allow for some more air flow but it was a useless attempt.

If I absolutely must go watercooling , what would you guys recommend ?