This is an NOS Power Steering to Crank Pulley GM #3751232 for 1964 thru 1968 Chevelle, El Camino, Impala, Caprice, and Bel Air with Power Steering and 327 ci, also All 1964 thru 1968 with 283 ci, also 1964 Chevy II Nova with 283 ci, also 1968 Chevelle, Impala, Caprice, Bel Air with 307 ci, also 1967 and 1968 Camaro, SS, Z28, RS with Power Steering and 350 ci, See Pictures