Excellent looking re-pop. As for the crisp lines, if you can find a early set of heads the lines on them were crisp also, over the years the line lost this, most likely due to press wear. I put a set of NOS on my Power Wagon I had a few years back and they had super crisp lines, boxes were date coded for 6/75.
The ones on my currant 77 shorty are not as nice, boxes were marked 9/80.