The Performer 5.0 RPM II manifold for 1986-95 5.0L Mustangs has shown significant gains in horsepower over existing designs in the 1500 to 6500 rpm range, and is ideally suited for street and strip applications.
Edelbrock Intake Manifold; Ford Mustang 5.0L Performer RPM II Manifold; black finish
Edelbrock part #9759 Valve Seal kit is a replacement valve seal kit for Edelbrock 390-428 FE Ford RPM Cylinder Heads with the current .562" seal mount diameter. These are hi-performance Viton seals with a steel body. Set of 16.
Ford:Small-Block Windsor:302 (5.0L)

Fitment:
Ford Mustang GT 1986
Ford Mustang GT 1987
Ford Mustang GT 1988
Ford Mustang GT 1989
Ford Mustang GT 1990
Ford Mustang GT 1991
Ford Mustang GT 1992
Ford Mustang GT 1993
Ford Mustang GT 1994
Ford Mustang GT 1995
Ford Mustang GTS 1995
Ford Mustang LX 1986
Ford Mustang LX 1987
Ford Mustang LX 1988
Ford Mustang LX 1989
Ford Mustang LX 1990
Ford Mustang LX 1991
Ford Mustang LX 1992
Ford Mustang LX 1993
Ford Mustang SVT Cobra 1993
Ford Mustang SVT Cobra 1994
Ford Mustang SVT Cobra 1995
Ford Mustang SVT Cobra R 1993