1968 Carter AVS Application Question

Greetings,

I am new to the A-Body world having recently purchased a 1968 Dodge Dart GTS 340. I am only the fourth owner of the vehicle and it came with most of its original factory parts, most of which were restored a few years ago. The one deviation from factory is that it currently has an Edelbrock 650CFM AVS carburetor on it. Another carburetor was included with the car, and I was told that it was the original. Based on my limited research, however, I don't think it is.

What I gleaned from the references is that my car (1968 340 Automatic, January build date) should have a Carter 4425S. The carburetor that was included with the car is a Carter 4636S (1968 340 Automatic w/ AC). My question is this: Could my car have possibly come with the 4636S from the factory even though it should have had a 4425S? The only difference in application is AC vs. no AC. Just thought I would see if anyone had any insight into this and to see if I needed to start a search for a 4425S.

Thank you very much for your input! I look forward to participating on this forum.