What is this? Guy says 56 Chrysler 300?

Guy selling this says it’s a 300? But the grille does not look like a 300? Any suggestions?

Newport?

Windsor

Windsor seems right; a 300 that year would be a 2-door HT and have the Imperial split grille treatment.

All of the Chrysler 300 I've seen from the 1956 B models to the last letter series all had the 300 emblem with the letter on them, no 300 cars without letters and four doors until 1962
That car should have poly 331 C.I. motor in it, not a hemi