[Woodz428]

The number you gave couldn't be a head #, you have to have the manifold off to see the #. It's under the intake ports in area within the lifter valley.The fact that you indicated paint and seemed to say it was external means you were reading some other number...what I don't know because the date code is under the valve cover... the block number should be above the starter. I would ask again how you are certain it is an original Cobra engine? Ford sold loads of over the counter Cobra kits that went on 289s from Falcons to Galaxies.