I had a horrible time trying to fit an AMD rear panel on our 70 Cuda. The top curvature of the panel, both the arch that goes along the trunk lid and the top outward curve, didn't match the curves on the (AMD) trunk lid. AMD sent me another free, but I still had trouble with it. I ended up getting a generic one off of Ebay that did the trick. Be sure to use sheet metal screws to put it on temporarily to check the fit before you go crazy welding it in.