First let get some definitions straightened out. Do you want fast or quick. If you want fast, the 3.00 gears are about what you want to keep.

If you want quick (stop light to stop light) then go with a little deeper gear, keeping in mind it will be a trade off for in highway speeds and gas milage. Depending on if the car is being going to be seeing little or no highway milage you might consider factory 3.89 gears or aftermarket 4.11. If your looking for a good compromise, a 3.50 is a good gear.

You have a pretty heavy car, with an advertised curb weight listed at 4096 pounds (give or take depending on how it's optioned.

A 750 CFM carb and aftermarket intake are always good additions for this engine.

If you define how you'r planning on using your car a little better (and waht your budget for doing it is) it would help in getting you realistic recommendations.