Visible progress!

[Chevy454]

ScK:

The SS emblems on the rear of a Nova had 4 attachment points, kind of like this: \ /. Our car then had a hole drilled on each side of the "\ /", all the way through, and used 1 of the original holes and 1 new hole for each new emblem. But, this left 2 visible holes from the previous SS emblem. In fact, we've heard that these extra holes were what led someone to further investigate a hidden Y-Nova. Anyway, doing them that way staggers them like the Camaro, and I'm gonna *assume* they used speed nuts or whatever as well. So, I'd say your "wooden chisel" theory is pretty darn close!