numbers matching

should a '68 340 Dart have a carburetor with the numbers on it that would be found on a '68 340 Dart carburetor?
so...the carburetor numbers would be a match,but not necessarily original.

yes

Bingo. You are 100% correct. It seems cudascott didn't get the point or was being a wise guy, I am not sure which.

yes

you can date code it to the specific year and engine, but you cant show it is the actual original one that it left the factory with