I'd use your original ones. You did a really good job on them. I did the same thing with my Challenger grill emblem. I had collected three of them over the years. I picked the best one, polished it and reapplied the black paint.

I replaced my adhesive backed Challenger quarter panel emblems with repops. They look just like the original ones if I remember right. The one you show looks awful. You have me curious. I'll have to check mine again. I'm sure the letters aren't that skinny.