ALL factory intakes had the holes castin with a blockoff plate.The factory intake was way diff inside with a plate seperating the top and bottem.My engine lost 100 rear wheel HP between 4000-5000 with my setup with one of Daves intake.The repops are better than the factorys thanks to Daves R&D.I think the Randy intake with the V plenum is the best HP intake.You will have no problem with the idle on the intake and progressive works the best for the street and solid at the track.NEVER ran one with a auto!Tom
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