Found my build sheet. Mostly
LL41 UNKNOWN
G5B UNKNOWN
LL41G5B;
L - Dodge Dart
L - Low price class
41- 4-door sedan
G - 318 engine
5 - model year
B - Hamtramck, MI assembly plant
DX9 Upper Door Frame: Unknown At This Time
Can you post a photo of your upper door frames? (the part with the lock button forward) Is it painted or padded?
514 Date Built: 5 / 14 / 1975 - This is actually the SPD - Scheduled Production Date. Check the MDH code of your door sticker for the final build Month/ Day / Hour
G52 Unknown At This Time
G52 - LH remote chrome mirror
J42 Delete Front Licence
J42 is actually the floor boom dampner. Look above the rear of your driveshaft for an odd shaped weight with a rubber mount hanging from the floor.
N37 Unknown At This Time
N37 - Exhaust system with catalytic converter
L2 Unknown At This Time
L2 - Build on assembly Line 2
474 Unknown At This Time
474 - these numbers range from 001 to 999 (so far) but they do not seem to have any correlation to anything on the broadcast sheet, it still remains a mystery to me.