Thanks for the help. I'm somewhat restricted in what I can do because the two amps I plan on using are the aforementioned Kappa amp and an original Infinity DPA-250 Digital amplifier. It's not very flexible as far as amps go: 2 X 50 watts at 4 ohms, can't do 2 ohms and not bridgeable. But I think it's really cool and it's all I have from my old setup. I was planning on running the 250 up front and the Kappa for the rear speakers and the subwoofer. The only reason I'm considering the dual 4 ohm is because they seem cheaper than regular 4 ohm or dual 2 ohm ones on EBay. I've already spent about $150 on materials for making the fiberglass enclosure (Lots of pics if I ever get done with the setup!) and other various accessories. All this for my wife's car to boot! Needless to say, she's not too keen about what I'm doing to "her" car, but I just couldn't leave it like it was, since I had all the stuff just lying around.