445cc (50 lbs hr at OE 58 PSI fuel pressure) FIC Fuel Injector Clinic Injector Set for 4.8 5.3 6.0 Truck Motors ('99 '06) (High Z) (is304 0445h) Wiring Adapters:PGTUSC8 Dual Channel Knock Control Dual Channel Knock Control Synchronised to engine position with high speed digital filtering for accurate detection The boost pipe also has 2 x 1 8th" water meth nitrous bosses incorporated into the design for tuners to keep inlet air temperatures on the safer side while pushing the B58 engine to its limits and aiding the option for a maximum power output This plug conversion is made necessary because FIC always chooses to provide brand new This can be done by soldering in the pigtails (included with purchase) to replace the plugs currently on your harness