Motobilt's Tunnel cover for the CJ/YJ is CNC laser cut from 16ga high strength steel. Our tunnel cover doesn't have holes so you can place the holes where you need them. Bolt holes get moved or are needed in custom places for twin stick shifters, etc. The tunnel cover is rigid enough to weld on brackets. The tunnel cover is considered a universal fit cover. The outside shape fits the factory shape on the floor of the Jeep CJ and YJ.