Amplify your truck's performance at the friendliest price around Gain up to 50 hp88 lb - ft 8 Percent more towing MPG Black tip Pickup Banks Git - Kit produces rear - wheel gains up to 50 hp, 88 lb - ft torque and saves you an average of 8 percent in fuel when you're toting something heavy behind you. Maintains safe EGTs to preserve engine durability. Fitment Notes Important - Some vehicle configurations require an extension kit for proper fit. 1999 Power Stroke variations Ford trucks for model year 1999 fall into three categories 1999, early 1999.5, late 1999.5. It is important to know the specific model. Check the build date on the tag inside the driver's door, then match 1999 model year (built prior to 199 with catalytic converter), Early 1999.5 model year (built prior to 199, no catalytic converter, intake manifold has 2 inch - diameter inlets), Late 1999.5 model year (built on or after 199, no catalytic converter, intake manifold has 3 inch - diameter inlets). 1999 - 2003 F - 350 cab - and - chassis (no bed) trucks If fuel tank is behind rear axle of the vehicle, use systems for F - 450550 trucks. 1999 - 2003 pickups other than standard - cab long - bed or extended - cab short - bed require Exhaust Extension Kit. Git - Kit not available for 2001 - 2003 (275 hp) pickups. Git - Kit Bundle, Power System with Single Exit Exhaust, Chrome or Cerakote Black Tip for use with 2001 - 2003 Ford 7.3L F250F350, With Catalytic Converter