All you need is a set of front rotors and caliper brackets from an 2000 impala (other years will work but it's easy to remember since it's the same year as your car), EVERYTHING ELSE WORKS. Just make sure you don't have the cross laced wheels, the larger brakes have interferance issues. Yes, the only difference is the larger rotor, but the difference is night and day. Best $45.30 mod I've ever done.
I don't know why people say or think this but I saw bigger SOTP gains from an air box than any other mod besides a pulley.
It's inherit to front engine front drive cars since most of the weight is on the front tires. There are ways around this though. One way is by changing tires sizes (wider in the front like the GXP's). With the GMPP handling kit I notice waaaay less body roll. Start with that and see if you like it. If not you might want to get some springs/ struts and tires. One more thing, make sure to flip the front sway bar when you install it.
You can help get rid of heat in the supercharger in a few ways. Add an intercooler, they are pricey and for good reason, they add 40-50hp. You can do what I did and block off the coolant passages in the supercharger and or the TB, gains aren't noticable but I was already in there when i did my intake gaskets. One last way is by adding a cooler thermostat.
If everything looks good then...good. Just as a heads up, you might have issues with front control arm bushings poping out if they aren't already. Don't worry though you can get them pretty cheap on rock auto and they are easy to swap out in about an hour.
Hey another free mod you can do and I highly recommend is flipping your dog bone bushings. Its really easy and helps out big time with drivetrain flex. Do a search on how to do it.