OEM part number for 26 inch shroud?

Hey folks,

I searched but didn't find what looked like a definitive answer. What is the OEM part number for an A body (1975 Dart Sport) 26 inch radiator shroud? I picked up what I thought was a 26, but is actually a 22. I'm going to look at a place that has a few, but want to make sure I'm getting one for my Dart and not one for a B, E body, etc.

Thanks!