Here's a couple. This is a 1965 coil that was painted black, stamped with silver ink and a black painted bracket attached, you can see the negative on the stamp on the inside of the painted bracket. Also is a dimension drawing for a stamp if you get one made. The last is a representation of date codes for 65 and 66 Mustangs. I don't remember the font size. I think it was 12 point, or the font type, but you can use the information as you see fit.
JIm