As far as I know Holley only made one manifold for a Pontiac motor. I would say it's a Holley Street Dominator manifold. It's a nice manifold and works well as a street manifold. They also are good performance manifolds too, I had one that was modified to fit a Dominator carb and had some runner work too. With ported #16 heads, this manifold and a flat tappet solid cam my 3550lb LeMans broke into the 10's.
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Tim Corcoran
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