The Aeromotive Compact Adjustable Fuel Pressure Regulator is one of the highest quality fuel pressure regulators out there. When you have so much money and time invested in your motor, don't risk a lean condition by using cheap aftermarket FPR's or your old stock unit. Aeromotive FPR's are made from machined aluminum and feature: -6 AN size fittings on the side inlet and bottom outlet. A 1/8NPT port is on the side opposite the inlet so you can hook up your favorite flavor Marshall Fuel Pressure Gauge. (port comes with a threaded plug in case you don't run a gauge) Rated for up to 1,000hp. Adjustable from 40psi to over 80psi Manifold pressure referenced, just like the factory unit so fuel pressure will rise on a 1:1 ratio under boost/vacuum. Comes with pictured mounting bracket.