In my search for new mods for my 04' AT Limited I've stumbled across these guys claiming to have a Stage 1 Turbo kit that fits our cars:
STAGE 1 Universal Turbo Kit [TURBO] : Engine Performance Chip - Car Performance Chips ECU Tuning Flash

Has anyone seen/used that before? If yes what gains does it yield? Is it even possible to bolt this on our cars? I know a couple of our members have tried building a turbo/supercharger with different results....