2007 G6 GT 3.9L 6 spd std trans FE2 suspension. Replaced worn out front struts with Monroe OESpectrum as they were both worn out. I also replaced the rear with OESpectrums as well to take advantage of a Monroe promotional program. The rear shocks actually seemed to be just fine.
Here's the thing: I found that now my car actually rides "too nice"....the Monroes seem to have much less damping and I no longer get the firm ride I desire. I especially notice it in the rear of the car now.
From what I can tell, there is no differentiation between the various available FE options as far as shock/strut replacements. I have not checked with a GM dealer to see if there are different part #'s depending on which suspension specs the car may have.
At any rate, I'm not really pleased with the Monroe's and not sure what I can do about it now. I do still have the "old" rear shocks and might just put them back on.
Rick in Canada