there appears to be NO rhyme or reason why a Charger 500 would have:
a "XX" VS "XS" VIN tag
a "XX" VS "XS" fender tag
a "XX" VS "XS" engine or transmission stamp (or a "XX" VS "XS" overstamp)
Actually there is a rhyme to those questions. VIN tags are XX on all of them, except for 10 noted cars that are XS everywhere.
XX and XS on fender tags have a definitive switch over date. Same things for the change on broadcast sheets from XS to XX, and there is another date as to when the window stickers changed from XS to XX.
There is a split as to when the engines went from XS to XX as well and only a short time frame where they are double stamped.
Side note, Troy exactly what Tomato PATCH did your car come out of? Cars are built in BATCHES not patches.