Here is a 1966 Rambler Classic grille, that I believe also fits the Rebel & Marlin. Not sure about the Ambassador. The physical condition is a good 10 of 10, and the cosmetic condition is about 8 of 10. Looking close up, you can see what looks like water blemishes on some of the shiny aluminum. I would imagine this would be on any used one you'd get. Standing back, say 6 - 8 ft, you'd hardly notice it, if at all. The right polishing techniques would probably make them disappear altogether. The flat (or satin) black areas need respraying, but that's easy to do. There are no bends, warps, or gouges on this grille. The screw clips will be in a small container along with a couple of extras.
If interested, please call Tom at eight28-six93-nine867 and leave a message. I don't answer calls I don't know, but will call you back. Or, you may email me through the "reply" button up top. Thanks for looking !!