two for Corvair....63....some seats have a thin metel tag wrapped around underneath the bottom on the spring and might have a date on it....
GM used the same seat frames in all (if not most) of their cars these ran from about '62 tru 65. the full size cars had the full chrome, and the smaller cars had the chrome on the side only. also the full size cars mounts were different they actully bolted to the tunnel on the inside. the smaller cars mounts went to the floor.