I can't say as I've never run one but it looks most like a Weiand Xcelerator 4V which I don't care for (too dead down low). Actually, I bet a Weiand Xcelerator 2V would be better on 4V heads than the 4V version for many applications. The Holley Strip Dominator is still hard to beat, though the tall race intakes from Australia look very good from initial dyno results I've seen.
Dan Jones
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