Just joined and found this site, owned the IS200 a 02 model for nearly 2 years, its only a S model was a gd deal with low mileage ;) not really new to lexus's owned few toyota's in past as with my family too, my last toyota was a imported chaser was only a 98 2.0 NA model auto(same 1G-FE engine as the IS200) not the twin turbo one sadly!
Plans are intake, stereo, lowered, exhaust and of course new wheels.