P/N 17336: 07-12?GT500 Stealth EFI Fuel System. For Mustang GT500?s with?GT500 4-Valve 5.4L Engine. Rated for EFI engines producing up to 1,400 Flywheel HP Forced Induction or 1,900 Flywheel HP Naturally Aspirated. For Mustang Shelby GT500?s with 5.4L...