It is possible for a Prometeia to cool 2 procs., however you would have to do A LOT of mods to it. You would have to split the suction line, and the cap tubes, get a stronger compressor, get a much larger desuperheater, and an extra evap. It wouldnt be cheap. Even then, you likely wouldnt get great temps on a SS, depending on the processors.
If you want a phaser that has 2 evaps, you would be best off going to XtremeSystems and talking to a builder there. They could build you one.
Also, you plan on using a Prometeia or Vapochill on a quad, hoping for high OCs, you might as well just forget about it simply because they cant keep temps that low on that much heat.