Aeromotive’s Stealth Fuel Systems for Mustangs are a truly innovative concept in fueling today’s powerful, complex muscle cars. No need for voltage boosters and expensive twin-pump systems. These Mustang Stealth systems are designed to allow you to utilize your factory fuel tank, but still plumb in a return-style system and support big power. Our single fuel pump drop-in kits use the factory tank, factory fuel level sending unit, and even the o-ring/retainer ring. This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.