did a quick search and found this:(
http://www.toyotaworld.com/specials/specials.htm)
The TRD 1.8L Supercharger is now approved for installation on all MY 04 1ZZ-powered Matrix and Corolla (except 4WD Matrix).
The 1.8L Supercharger offers a significant increase in power and torque and an additional 7.5 lbs of boost. The bolt-on unit is integrally cast and is equipped with new efficiency and performance enhancing features, such as a race-inspired supplemental injector for enhanced full throttle performance and an internal bypass circuit for fuel efficiency and smoother operation at low speeds.
Peak torque is 145 lb.-ft. supercharged @ 4000 RPM vs. 125 lb.-ft. stock at 4200 RPM. Peak horsepower is 166 HP supercharged @ 6800 RPM vs. 130 HP @ 6000 RPM. Approved for installation on both automatic and manual models, the Supercharger is fully warranted by TRD when installed by a Toyota dealer.
TRD has implemented a new part number change for all 2003-2004 1.8L Superchargers effective immediately. There is now one main supercharger assembly part number and a set of unique Vehicle Installation Kit part numbers that represent each individual 2003 and 2004 application as detailed in the chart below. Each Vehicle Installation Kit includes application-specific TRD supplemental ECU and hardware.
The Main Supercharger Assembly and a Vehicle Installation Kit are required for a complete installation.
Part Number Description Internet Special Retail
00602-17620-105 Vehicle Install Kit, 1.8L, 03 Matrix, Auto 1073.45
00602-17620-106 Vehicle Install Kit, 1.8L, 03 Matrix, Man 1073.45
00602-17620-107 Vehicle Install Kit, 1.8L, 03 Corolla, Auto 1073.45
00602-17620-108 Vehicle Install Kit, 1.8L, 03 Corolla, Man 1073.45
00602-17620-109 Vehicle Install Kit, 1.8L, 04 Matrix, Auto 1073.45
00602-17620-111 Vehicle Install Kit, 1.8L, 04 Matrix, Man 1073.45
00602-17620-114 Vehicle Install Kit, 1.8L, 04 Corolla, Auto 1073.45
00602-17620-115 Vehicle Install Kit, 1.8L, 04 Corolla, Man 1073.45
00602-17620-120 Main Supercharger Assembly 1921.55
Total Kit Price MY03/04 2550.00 2995.00