LX pulley's don't work?
Swap your gears for the 2.7/Special ones. It's the biggest bang for the littlest dollar and work. If you can find Prowler Pro Gears, they'll be even MORE nicer.
Intake spacers, true cold air intake, bore out your throttle body, port and polish your lower intake manifold, high-stall torque converter.
If you had a newer year 02-04 car, I'd suggest a Special PCM. But being you're in the older year area, you have more independent ignition/fuel management systems to tune it.
If you got no plans to ever turbo or supercharge it, the earlier year manifolds are popular options.