This is the "800" series Saginaw power steering box for GM cars built ~ 67-74. This has the 5/8 and 11/16 flares, 4-bolt mounting pattern, 3/4 input shaft.
Fit applications:
Chevrolet: Camaro, Chevelle, El Camino, Malibu, Monte Carlo, and Nova
Pontiac: Firebird, Tempest, GTO, and LeMans
Oldsmobile: Cutlass
Buick: Skylark, Tempest, and LeMans
This is a nice and low mileage box that was re-sealed a few years ago and was tested, but not installed, so it is ready to install. Valley Center.