Hello people, the questions are rather simple, but I prefer to ask you for your expertise on these matters.

I intend to get an HD 5970, and watercool it, now:

Im undecided yet on wether to get the EK-FC5970 or the Danger Den DD-5970, nontheless, wichever I get, I would like (when possible) to crossfire them - so.... Are both blocks compatible with the EK watercool Watercool HEATKILLER GPU-X² ???

And the second one:

Is there somewhere available to buy a SINGLE PCI bracket for the HD 5970 ???
If I water cool there's no point really on keeping the double PCI profile, and would love to get the extra PCI-E lane that otherwise would get blocked by the bracket.

Thanks in advance.