Stock intake vs performer?

Does anybody have credible test comparisons or know of a source. 71 340 intake vs edelbrock performer.

Dan,

Actual Drag Test

* 1971 Duster 340, 4-speed, w/3.91 Gears

* Engine rebuilt to 'stock' specifications
* Balanced and Blueprinted
* Stock Exhaust System
* Stock Intake #3512100 {100% Stock}
* Thermoquad Carburetor {#4972S}
* 8" x 28" M & H Street Slicks

Best Performance........ 13.96 @ 100.70 MPH
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Same car, with Edelbrock Performer #2176 {Not Modified}

Best Performance........ 14.18 @ 98.97 MPH