A procharger or similar kit will install physically with no problems. The problem is arise when tuning becomes involved. 2003's have an odd computer setup that has a separate transmission controller and bugs that arise when tuning. Yes you can get a kit, install it and you'll be fine. Most go to Hemifever for tuning, I'm sure he can figure out how to make the 2003 play well with a supercharger.
Also, this would most likely be the wrong section to ask questions. Hopefully a mod can move it to the right area in the 3rd gen section.