STEP THREE:
Select 2003 Lincoln Truck Model:

2003 Lincoln Truck Aviator 2WD V8-4.6L DOHC
2003 Lincoln Truck Aviator 4WD V8-4.6L DOHC
2003 Lincoln Truck Aviator AWD V8-4.6L DOHC VIN H
2003 Lincoln Truck Navigator 2WD V8-5.4L DOHC VIN R
2003 Lincoln Truck Navigator 4WD V8-5.4L DOHC VIN R