Don't know if this would be right but I was just looking to buy for my 1928 model 72. here is the link Cooling Parts, 1930-1960 Plymouth Dodge Chrysler Desoto (oldmoparts.com)
Calm
Go to facebook and do a search for L&L Antique and Custom Auto Trim I think that is the one. I think they moved to 2918 SW St. route V Rich Hill, MO
Phone 660-832-4378.