Vintage FIBERGLASS REAR SPOILER 70s MUSCLE Car FORD Chevy DODGE Pontiac OEM?

Description

Vintage, Old Stock, FIBERGLASS REAR SPOILER,
Unknown Make Model.
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4 feet long, tip to tip, connection points are about 37" apart.
Five contact points, three are bolt on locations
If you know make, year, or model car that this came off please tell me.
Vintage FIBERGLASS REAR SPOILER  70s MUSCLE Race Car FORD Chevy DODGE Pontiac
Is it GTO, Mustang, Camaro, Charger, I don't know
Condition:
Vintage used condition, some rough edges, light scratching & storage wear, see photos.
Screw in center hole is stuck and it will take a small grinder ti cut it off.
Va-room  Va-room   Zoom   Zoom