You can't have "numbers matching" criteria with components that are not marked with a VIN. You can have date or date code-correct parts, and correct part numbers, but parts like carbs, alternator, exhaust manifolds, etc., are not marked with a VIN or a portion of a VIN, so they are not counted as "numbers matching" criteria. It's impossible to identify any of these parts as being original to a car since they are not so marked. In this case, his 72 may have an R6368 carb but there is no way to prove that's the carb that came with that car. Worse, the car could have had an R6454 carb put on by the factory if the car was made late in the run, or even an R4666 if they ran out of R6368s and needed to install an equivalent carb to get the car on down the line, and all those would be factory-installed carbs. A car gets delivered to a dealership and they find an alternator or carb or pump is bad, so they pull and replace it before it is put out for sale. Is that car still original? Is it no longer original because the factory didn't put it on? Same deal with the quality guys at Chrysler. If alternator A was installed on the line and failed QA, and a new alternator was installed, is the car still "factory original"? 
That's a negative Ghostrider.
Chrysler never cared much for consistency when building our cars, and they ordered "X" number of any of these parts for a production schedule, and when they ran out they would use whatever was available, especially near the end of a model-year run, so it was common to have next year's parts installed on a previous year's car.
This also opens the dreaded "dealer installed" door that is always better left shut.
It's nonsense like this that I've been watching Mopar guys fight over for decades now. I don't see Brand X guys debating this stuff, probably because their brands made a gazillion of every model year car. Since Mopar production was only a fraction of those numbers, our cars have always been much more exclusive and some owners have to really go into the weeds to differentiate their cars from others.
R6370 is a correct '72 variant of the Holley 2210 series 2bbl carb originally used on 400s built for sale in California. Would only be technically correct if your car was built for sale in California.
Agree, “Numbers Matching” refers mostly to serial numbers and components containing serial/partial serial numbers, would have to disagree slightly when it comes to carburetor numbers on cars from this era. The ‘list” or “carb” numbers discussed here are the labeling of variations of a particular model or series of carburetors from carb manufactures for OE applications. Identifying an OEM carb calibrated specifically to a specific engine, transmission, model year, and, or emission systems requirement (California vs. federal spec). While differences between some variations may be ever so slight, never saw the wrong carb number on any car arriving at the dealers back in the day. Dealer & factory replacement carbs is another story, some replacement numbers superseded to other numbers or multiple OE numbers were superseded to a single replacement number. But carbs numbers were never interchanged on the factory assembly line. When fuel leaks and engine fires were problem for the Holley 4160 OEM carbs, there was a factory provided Cater AVS conversion kit installed by dealers on some cars. These AVS numbers will not be found in the FSM but are technically factory correct.
The classification of a "Numbers Matching" car requires a means to authenticate that a car is actually a Numbers Matching car. If you can not authenticate that fact, then the classification is itself meaningless. This is why Numbers Matching is based on the vehicle's VIN number. This is the only identifier of a vehicle that can be authenticated. The purpose of the classification is to verify originality, and you can't verify the originality of non-VIN marked components!
Correct, carb numbering was no different with other automotive manufactures from the time. Simply identified configuration and calibration of a model or series of carburetors for a specific OE application.
