The Crossfire's weight distribution is darn near perfect (53F/47R) compared to the Neon (64F/36R) so I'm not entirely sure if moving the battery in the car will buy you much at speeds driven by us mere mortals. Once you get above 8/10 of course, every little bit helps so I guess my question is this:

Is the amount of work going to be worth the benefit? You might be better off installing SRT-6 sway bars with urethane bushings & lowering the car an inch or so before you move the battery.