Look under the parts for sale, there is somebody selling the msa manifold with the appropriate holley carb. that setup is good. Arizona z car sells a 4bbl manifold, in a slightly different style, but it also works just as good. i would recomend the arizona style, if you plan on using a NOS kit, since it has an open entrance, insteda of the 4 holes, and since the nitrous plates for 4bbl carbs are open, with a bar in the middle, it would be a better choice.