2003 Ford F-150 BOSS with newer Lightning Drivetrain 2003 Ford F-150 5.4 BOSS with new Lightning Forged Motor and ported Supercharger

Description

The Boss 5.4 may look like a hot-rod F-150 similar to the SVT F-150 Lightning,
THIS ONE HAS A PORTED SUPERCHARGER AND FORGED LIGHTNING MOTOR AND TRANSMISSION WITH LESS THAN 5,000 MILES ON NEW DRIVELINE - THIS IS #251 OF 500.
The Boss 5.4 was produced in limited numbers by L.A. West, an Indiana-based conversion company, in 2002 and 2003. This modified F-150 was sold through Ford dealers. Each Boss 5.4 had a numbered interior plate and a certificate of authenticity.
Specific Modifications
The Boss 5.4 is an appearance package that includes body cladding, louvered fenders, a simulated carbon-fiber "cowl induction" hood, a unique grille and 20-inch wheels. It was available on regular-cab and crew-cab F-150s. The most common color is a bright yellow which was not a part of Ford's color palette at the time.
Engine
The Boss 5.4 kit was installed on trucks equipped with Ford's 5.4-liter SOHC V8. This engine is a two-valve per cylinder powerplant that produces 260 horsepower at 4,500 rpm and 350 pound-feet of torque. A cat-back dual exhaust is the only upgrade to the running gear, though some Boss 5.4 trucks reportedly have superchargers. Ford did produce a supercharged version of the 5.4-liter V8 in 2003, with 340 horsepower at 4,500 rpm and 425 lb-ft of torque.
Suspension
Unlike the Lightning, the Boss' suspension underpinnings are shared with the standard F-150, so the Boss 5.4 is equipped with an unequal-length control arm suspension in the front and a live axle at the rear. Power-recirculating ball steering is used, and the F-150 had four-wheel disc brakes in 2002 and 2003.