What you found is a 70-75 formula hood. they all were moulded that way. the true ram air hood had the front scoops machined out and the they slid little screens up thru those slots you see on the underside. If none of the ribs in the back are not boke then you can get anywhere from 100.00-350.00 for it. BTW They never put RAM IV'S in the formula so at best it would be a ram air III.
