66 Barracuda Tunnel Hump Dimensions

Welcome to FABO! Do you already have a replacement hump? It overlaps the hole about a 1/2" all the way around on a factory cut. With that fiberglass one Brewers has, you might want to leave a little more depending on how you plan to attach it. I have a factory metal one with the center bucket seat reinforcement plates that I would be willing to sell. Either way, you should get the part and then make the cut to match it.