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NO they are not the same. They were produced by competing companies. Of the two, the Holley Street Dominator was the better manifold. For whatever reason the Streetmaster was allowed to die and was replaced by the original Performer. The Holley Street Dominator is still in production and is a better intake than the Performer as well.

R.



The Street Dominator is no longer made for B engines. They bring good money used. I bought an RPM for less than I could find a SD for my low deck