These valve covers are presumed to be New Old Stock. I do not have the original GM boxes. Only the valve covers pictured. Cast part numbers list the for 1970-1972 Corvette and Z28 Lt1 but the will fit and look great on any small block Chevy with the same bolt pattern. Look closely at the pictures I have not polished or cleaned in anyway. I blew the dust off of them. One oil baffle has light surface rust which could be easily removed. There are small imperfections around the bolt mounting holes.