Also, as an FYI regarding the two hoods shown in that pic (along with a bunch of other hoods), the one on the right (above the yellow & black two-tone hood) is the more accurate configuration of the 78/79 Z-28 hood; the one on the left (next to the green Auto World hood) is ... just ... WRONG! That is, if it is supposed to be a GM hood; if it is supposed to replicate an aftermarket hood of some kind, ... well, it could be. But it is definitely not right for a factory hood.
Hope this helps.