Try ebay or craigslist for "22 Mopar shroud". You should get some returns. You might be able to find a media blasted-period correct one and spray paint it black for less than $100. I know $175 sounds painful but I think it's worth it to maintain the stock look.
I think Summit sells generic shrouds that you can cut to fit too (for the diameter of your engine fan). Will run you maybe $50. I took this route because I have an aftermarket radiator. It's functional.
.....I guess my next question should be, does anyone know the correct part number? I want to as correct as possible here so, I have a 1969 Dodge Superbee 383 non a/c car. The radiator upper and lower hoses are on the driver side.