Looking for a OE radiator cap

[NewportTM]

Does anyone have a picture or information on where I can find a OE radiator cap for my 66 Newport. I have found a few websites, but I just want to make sure I am getting OE. It has the 2bbl 383 with the 26" radiator.

Thanks

 

[1966newport]

the repro is junk. it rusted badly on a car that's sits in the garage