Probably the easiest brake upgrade is the Grand Am brakes. You could do them only on the front, or front and rear. That will give you vented brakes and all you need change are the rotors, calipers and mounts. Dean could easily do that for you. You will loose the emergency brake function if you put them on the back.
That swap would give you pretty good stopping power under most street driving conditions and greatly improve stopping power under mild performance driving. I ran 40 minutes at Road Atlanta with stock brakes without any brake fade, but I used my gears extensively for braking assistance.
