This turbokit is the best bang for the buck. GT35R performance without the price. 400 +whp on pump gas, 500+whp on Race gas. Here is some dyno results from Ultimate Racing comparing between the UR GT35r kit, and the T3/TO4S kit. 05 STi (Red/Blue) - Stock 2.5L Engine - Ultimate Racing T3/T04S Turbo Kit - Ultimate Racing Version II Front Mount Intercooler (Fits both rotated and bolt-on setups!) - Ultimate Racing 3" Cat-Back Exhaust - Ultimate Racing 900cc Top Feed Rail and Injector Kit - Walbro 255lph Pump - Hallman Manual Boost Controller @ 20psi - TiAL BOV - 93 Octane 04 STi (Orange/Green) - Stock 2.5L Engine - Ultimate Racing GT35R Turbo Kit - Ultimate Racing Version I Front Mount Intercooler - Ultimate Racing 3" Cat-Back Exhaust - Ultimate Racing 900cc Top Feed Rail and Injector Kit - Walbro 255lph Pump - JoeP Manual Boost Controller @ 20psi - HKS SSQV BOV - 94 Octane The kit includes: - Garrett T3/T04S Turbocharger - Ultimate Racing 3" Stainless Steel Downpipe - Ultimate Racing Wastegate Dump Pipe - TiAL 38mm External Wastegate - Ultimate Racing Up-Pipe - Ultimate Racing Cold Air Cold Air Intake with MAF Housing and Air Filter Ultimate Racing T3/T04S Kit $2450 shipped! (Retail: $2600) If you have any questions please give me a call at 678-297-7770, Or e-mail me at Tray@topspeedsales.com Tray M