Anyone good at decoding early a's?

I have a 66-76 decode book but some of the numbers are the same.
702= July-2-1965
06124= is the car order number
L42= L=Dart 42= 2dr hardtop
P4X= black vinyl
881= I think should be BB1- black paint top/bottom
B= black
20= engine not in my book but I think it is a 6 cyl 1 bl.
5=automatic

The rest is not in my book.