Joe, that is interesting, on my 428 in my Fairmont, back when it had an automatic (with a transbrake), I tried 5 different intake manifolds, and at least 1/2 dozen different carbs, including a 1050 Dominator, with an adapter, and nothing I tried, ran quicker or faster, than a Holley 780 vacuum secondary on a modified Sidewinder. The Dominator was used on a PortOSonic, and ran no faster than the 780 on that same intake. In fact, among the five different intakes, there was less than 1/2 tenth from the best to the worst. Maybe a dyno may read more of a difference, but the 1/4 mile dyno did not. And on my current 347 SBF, it has run identical numbers (10.01ET at 132 MPH), with both the same 780 vacuum, and a 750 DP.