SKU:49434 | Manufacturers Part Number: 33005-AF001HKS Twin Scroll Front Pipe/ Downpipe HKS twin scroll front pipe/ downpipe with Catalytic converter for a Subaru Impreza GDB Version 8 (Non Wide Track).SUS304 Front Pipe with catalytic converter for JDM (RHD) SUBARU IMPREZA STi GDB C,D-type EJ207 Twin Scroll Turbo.Exhaust gas pressure will be decreased. Boost response and horsepower will be improved. (Max. Horsepower 11[ps] UP / Max. Torque 1.8[kg.m] UP)HKS: Catalytic F/Pipe Subaru GDB(C,D)(Twin scroll)11/02~5/04