You are looking at the back seat from a 65 Pontiac GTO coupe. It is correct for 64 to 65 Chevelle, GTO Lemans, Skylark GS, Cutlass, 442 two door with the small, bolt on rear armrests. Measures 57.5 inches across the base, 55 across to top. Does not fit convertible. This is a great core for re-upholstering. The frames and springs are solid. The covers and cushions will need replaced. This is a hard to find seat core. If you need it, don’t let it get away.