392 was the ultimate of the early hemis. The first Chrysler hemi was a 331. The smallest was a 1953 Dodge with a 241. Chrysler (FirePower), DeSoto (Firedome), and Dodge (Red Ram) all had the hemi motors in different years and models but each brand had its own unique displacements. I had a ‘55 Dodge pickup with a 270.
I had a ‘54 Chrysler Newport New Yorker. Hemi with, I think(it’s been a long time!) a single barrel carb. Bought it in about’71. It was mint. A real “little old ladies’” car from Whitefish Bay. Maroon, with a white glove leather interior. Body and undercarriage had been treated with Dupont #7 products when the car was bought, so zero rust! Had all it’s paper! Manual said to park under a bridge to tune the AM radio! What a cruiser!