Dual honed, the larger upper intake manifold will provide the engine with more air as well as better sound at higher RPMs. This upper intake manifold was designed for SVT Contours, and to receive the most benefit from this upgrade switching to the SVT throttle body is also recommended. Because SVT Contours are no longer in production, SVT upper intake manifolds are becoming a rare find.
For earlier Cougars (production year 99), upgrading to SVT lower intake manifolds will also yield gains. Later model Cougars (2000 thru 2002) are already equipped with SVT-sized lower intake manifolds.
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