Edelbrock part #2826 Super Victor LS3 carbureted intake manifold is designed for Gen IV LS engines equipped with LS3 cylinder heads. This new Super Victor intake manifold is designed with 24% larger runners than our Victor Jr. #28457 along with a larger 4500 style plenum.
For the high price Edelbrock should provide the mounting hardware since the OE bolts will not work. They do not even recommend the bolt length that works so you have to measure accurate. The optimum length is in between any standard metric size so getting the right length can be tricky.
They do provide two studs that are unique to this manifold but at a minimal cost could have provided a complete bolt kit just as they do with the similar application and less cost Victor Jr.