Here is some pics of a ford McLaren 4.6L engine, it is a model but scale accurate. Notice the valve covers look and style and angle as well as the exhaust manifold port lay out:
This is a Buick Nailhead, notice the VC, wire covers and exhaust port layout:
So whatever the car has in it NOW, those pics are of a nailhead.
This is a Buick Nailhead, notice the VC, wire covers and exhaust port layout:
So whatever the car has in it NOW, those pics are of a nailhead.

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