That would have originally been a 325 horse 383, but I don't think that is the original engine. Wrong valve covers, exhaust manifolds, carb......etc.
Yes!Wasn't the Magnum name for Dodge and Super Commando for Plymouth and TNT for Chrysler? My Dad bought a new Monaco in 70 with a 383 4 bbl, dual exhaust but don't remember what if anything was on the air cleaner. It did run pretty but not nearly as good as has 69 New Yuker with a 440. Man, that thing was a boat....and a lemon but the 440 never missed a lick. Maybe it was my fault?
Mom and Dad bought a '66 Fury in '67 with the 2-bbl 383 (270hp I believe), so yes, C-bodies at the time did come with a 2-bbl. I never got over the fact it was a 2-bbl.....For B body cars, all 1966 383's were 4 barrels. Not sure about C body cars.