The engine is a V12, which means it is in the shape of a "V"
with 6 cylinders on each side. Longitudinal means it is mounted
lengthwise and not crosswise like the small front wheel drive
vehicles and it is mounted in the rear of the vehicle.
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Sound waves are longitudinal.
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Sound, at least in gases like air, can only propagate as a
longitudinal wave.
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No. The F150 installation is longitudinal and the Freestar is
not. That makes the manifolding incompatible.