1968 Hemi Barracuda info
was the right inner fender hammer in from the factory.
from what i have read. the racers hammered them in for clearance, from the racers putting bigger cams, rockers and valve covers. The chrome ones no longer fit unless you dent the valve covers out from the inside
the picture you posted is a restoration, not a factory picture before a racer owned it. i could be wrong, but need to see to believe it.