METCO Fuel Block Kit 1999-2004 Ford Mustang, including V6 and GT This convenient billet adapter mounts directly to the factory (or aftermarket equivalent) fuel rail, sandwiched between the rail and the OEM fuel pressure sensor. The fuel block seals with OEM-style O-rings, so no gaskets or sealants are required. The installation is a quick and simple affair. The block has one 1/8" NPT port on each side, providing a convenient tap for a fuel pressure gauge, a tap for a nitrous system, or both. A stainless steel pipe plug (not shown) is included to plug one port if the port is unused. The kit includes the CNC-machined fuel block, O-rings, one stainless steel 1/8" pipe plug, and mounting hardware. Note: This fuel block is available separately under Metco Motorsports PN MFF0003.