Thanks for all of the suggestions. I used K&N in my Contour SVT, and my brother is also suggesting that I use the Amsoil oil and filter - I think he's a preferred customer, so the price would be good - but I've almost decided to go with AC-Delco's UltraGuard Gold. Just a GM thing, I guess.
I've even decided that I might not go with a Borla Cat-Back - will probably go with Corsa's Sport system (PN 14189) because it's offered for sale at the dealership. I'll have to look at both systems a little closer before I actually decide for sure.