how to tell if dodge dart is a swinger?

I have a 72 to 74 Govier,Chrysler Corp Production Option Code Book, and I know it doesn't apply to 76, but this is what it says;
the LL can apply, among others,to; 69 to 74 Darts,69/70 Swingers,71 to 74 Dart Swinger Specials,
the LM can apply,among others,to; 69/70 Dart Swinger 340s, all Demon/DartSports with 340s or 360s
the LH can apply,among others,to; 69 to 74 Dart Custom,71 to 74 Dart Swingers
So I have to conclude that Darts and Swingers might come in any of LL,LM,LH, but that, NO 71 to 74 models fell into LM
Further, one might conclude that a 71 to 74 Dart, could be;
an LLDart or an LLSwingerSpecial, or an LHDartCustom, or an LHDartSwinger

As to 75/76 I cannot say.