What are these new Weiand Top Qualifier Series manifolds?

Weiand's newest 360° single plane, open plenum manifolds take torque and horsepower "to the limit." Six months of working closely with top engine builder Ken Duttweiler has produced incredible performance gains up to 8,000+ rpm. Utilizing modern fuel/air delivery techniques, these new manifolds beat all the competition with increased mid-range torque and high rpm horsepower resulting in quicker drag race elapse times, crisper throttle response on the short track and more MPH on the straight away and at the finish line.

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