I hear from people that the Bitspower SLI push fittings with the double o-rings are actually really snug.
So gonna use that I suppose.
Along with 12mm piping, and its going to look pucker.
Might get it nickel plated after its all cut and bent, as then it will match the rest better.
But might not... Dunno will decide later.
Thanks for all the help provided, its been really awesome.