I'm not sure how well the Jet chips work on a Series II application. My first inclination would be to snag a performance PCM from Intense or ZZP. You can find links for their websites by clicking the "links" tab at the top of the page, then scrolling down through the list. While you're at it, browse through the modifications listed on their websites. If you find a few that trigger your fancy, post back here and we'll give you our opinions about each part.
Aside from that, you might want to fab up a cold air induction setup. Use the search function at the top right of the menu bar to see what people have done in the past, or click the Techinfo tab at the top left of the page and explore the Performance section. There are literally hundreds of threads dealing with CAI setups, and I'm sure you'll find a design that you can use.
Rest assured, there are many things that can be done to your SE. I have a '97 SE myself, and I'm currently making about 40hp more than the car had from the factory. From handling to engine upgrades, you're definitely running with the right crowd