Three Stage, 1.100 Pressure/1.100 Scavenge Fits: Chevrolet-based Small Block & Big Block Door Car applications Steady oil pressure throughout RPM range Consistent oil pressure at high heat levels Increased vacuum Consistent oil pressure at high vacuum levels Oil pressure adjustability, allows for finer tuning of pressure levels Internal manifold with -16AN return, no need for separate manifold Built-in mounting bracket designed for engine compartment constraints Two pressure outlet locations for easier plumbing Includes all necessary fittings Vertical oil pressure adjuster makes it easier to change oil pressure settings