Hemi scoops

Did the original 68 scoop have the rib down the center? There seems to be a few variations of this scoop. Is yours an exact replica?

these are not the same as the original scoops the original were made of thin fiberglass and I am not sure of the rib. I have seen them with the wide rib the thin rib and no rib. all I do know is these look nice on a car. thanks henry b.:glasses7: