Nobody re-produces the Grump Lump #15643 (accurately that is) that Ive seen. Speedway has one called
"GM Scoop" that's the closest to it. I have one I bought for my straight-axle Nova, but it just didn't look right for the car. I can put some pictures up of it although I don't have any Camaros to set it on. I've been passively looking for a "period" style scoop for some time now and nobody seems to have any interest in making the older-style scoops (as I imagine it's a limited market)...