S/C a Cadillac

I recently acquired a 1997 Cadillac Seville. I feel she needs a little more power. I have seen newer Cadillacs being supercharged and I was wondering if I could supercharge this one. If not though, what are any other performance mods that I can do.

XMS was making a supercharger for the Northstar, but they ran into problems getting the OBD II computer to work with it. So there is no supercharger available for a street Cadillac.
There's not too much else you can do besides a good exhaust system. I have a Corsa cat back on my 2000 STS, but the Corsa system is only for the 1998 and up Sevilles.