how to wire 4ch amp to 2ohms 4ch stereo

I have an a/d/s/ PQ10 that puts out 37.5RMS*4 which I currently use it for two channels bridged and gives me 90*2RMS at 4ohms.  Someone suggested to use this amp to run my 2 sets of 6.5 components.  I have 1set of Diamond M661 rated at 20-170 and a set of Focal 165K2 rated at 100 to 200.  How can I wire the amp to give me 4 channel stereo at 2ohms?  And, would it be enough power for the 2 sets of 6.5s?  Also, would it run too hot if I do this?  Or should I leave it at 2 channels 90*2RMS for the Diamonds and my Kicker 705 which puts 400RMS for my subs and 160*2 RMS for the Focals?

I'd really appreciate if someone can give me advise on this cause I'm pulling my hair thinking on what would work best.