Intake Manifold

The Mopar dual plane and Edelbrock Performer have slightly less volume than the Weiand Stealth. The Performer RPM & Air Gap are good manifolds and very likely the same internally. But I consider the Weiand Stealth one of the better manifolds also, similar to the LD340. I've used the Stealth on my race car, but I never made any conclusive comparisons between it and an Air-Gap I tried once.