Motor Trend January '66 & HOT ROD January 1966 both show the same pic of the small unsilenced air cleaner on the 383 4bbl.

..... not the end-all-be-all, but I have a 1986 Fram Filter Catalog - the '66 Dodge V8 air filter listing is as follows:

273/318 (except Dart 4bbl) - CA160PL or CA160
273 4bbl Dart - CA162PL
361/383/426/440 2bbl or 4bbl (except HI-PERFORMANCE & Police) - CA127
361/383/426/440 2bbl or 4bbl HI-PERFORMANCE & Police - CA162PL