Well after restoring a '71 I can say it sure looks like Charger. Whether a 72 or not I am uncertain. Here's a '72 Charger I had for parts, look at the character lines/creases in the lower door and note that they do not meet. '73 and up I believe simply formed a single crease along the lower door and so they do not interchange with earlier models.

Yes 71 and 72 shared the same body lines but mounted a little differently and have different marker lamps. 73 and 74 are interchangeable with each other but not with 71 or 72 they are each there year specific.

73-74

mounting at core support
1972




VS.
1973

its a 72 with the angled brace.And yeah...you have got the measurements right...the wheel depth is right...I found out the hard way by putting a 72 fender with the 73 bucket section welded in on a 73.Did not notice until the car was cut and polished .....hmmm the rallye stripe must be cut wrong...wrong answer