1967 Dart Concept Parts

what if you used a very course sanding to get a brushed look on the raised face portions? Have you ever considered casting these in AL or a low melt alloy? You can cast in fine green sand and then work the casting to whatever finish you like. I 3D printed some "S" medallions myself and customized a few aspects. I may cast them one day but the finish is very rough, low resolution hobby printer was used but I bet AL is soft enough to grind out and polish.