| If your 4 valve Mustang Cobra still has factory manifolds, you're leaving a ton of power on the table. When its time to unleash the power lurking within, ARH is the very best the industry has to offer. With Multiple multiple options to suit supercharged or naturally aspirated applications. ARH can take your 4 valve performance to a whole new level.
Features Included: Manufactured entirely using U.S. made 304 S/S. 100% leak free one piece long tube design. Your choice of 1-3/4" or 1-7/8” primaries with 2-1/2" or 3" collectors. Merge collectors with scavenger spikes standard. 3/8" thick flanges with tig welded and hand ported inlets. With or without ARH 200 cell 49 State Legal Severe Duty Cats
For Max Effort Applications. | 
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