I cant imagine you would need 2 1/0 gauge wires to run 2 jbl 1200s. That seems a little excessive for 200 amps. Isn't 4 gauge rated up to 180 amps of capable draw. I 2 gauge would probly be fine since thats such a small car, but if you wanted to spend the extra money you could go ahead and put in 1/0 and be sure your not losing any voltage.
Headunit: Eclipse CD8443
Front Stage: Boston Acoustics Z6
Rear Stage: Boston Acoustics Pro 6.5
Subwoofer: Dual JL 10W7 Sealed Enclosure
Mid/High Amplifier: JL Audio 450/4
Subwoofer Amplifier: JL Audio 1000/1