There's not much out there in the way of aftermarket body mods for the WJ, they did make a kit but it's really hard to find and they stopped making it 2-3 years ago. I think the only thing I've seen is an off-road front bumper. Other than that, it's pretty much up to your imagination and your resources.
2001 Silverstone Metallic WJ Limited:
Gen III Clear/Chrome Projector/CCFL Halos/LEDs, 8K HIDs, 8K HID Projector/Halo fogs, Clear/Chrome Tail Lights and 3rd Brake Light with LEDS, Diamond Mesh Upper and Lower Fascia, Spectre CAI, Breather Filter, Cabin Air Filter, Low-Temp Thermostat, Jet Stage 1 Chip, MagnaFlow Exhaust with Resonator Tip, Shorty Antenna, Front/Back De-badged