Well, I am doing basically the same thing as Dave, our builds are very close, and I am running my old tried and true 6 Pac setup. It has always worked very well on the street. I am running a Dynamic tight 10" convertor 373 Dana and will be installing a Gearvendors unit. If I were running a single four 4150 style, I would also go with the Holley SD, great manifold and properly ported is even better!