My Question....
Can I run the Infinity Kappas 680.7cs which are @ 2ohm, and the
Infinity Reference 6802cf which are @ 4ohm off the same amp ?

I have a 4 channel amp (JBL CS60.4)
60W RMS X 4 @ 4 ohms
80W RMS x 4 @ 2 ohms

It is pushing an infinity component set (Infinity 680.7cs)
90W RMS @ 2ohms

I came across a nice pair of Infinity speakers which will mainly act to fill the non music from the back of the car
(Infinity 6802CF)
60W RMS @ 4ohms

So again, running 2 speakers @ 2ohm, and 2 speakers @ 4ohm off a 4 channel amp, is it possible?

 

It will work fine.....

 

i do it and its fine. at 2ohm the amp will get a tad hotter but thats all

 

Great!
I believe I have the components in parallel + to + and - to -

Do I wire it the same for the rear speakers?

 

Yes! + to +, - to -, speaker to amp channels 3/4.