OK....another decoding question.......

toolmanmike said

My Galen book says L= Dart V8, 4=GT, 4=1964, and 5=LA built. (answering D/Dart man's post)

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I have only seen L42 for 2 dr hardtop and L45 for convertible and L76 is a station wagon.
L452 in vin# in 1965 indicates L = Dart V8, 4 = Dart GT premium, 5 = 1965 and 2 = assembly plant Dodge Main ( Hamtramck).