With MyMopar:
Y: Imperial LeBaron
M: Price class, medium
23: 2-Door Hardtop
T: See E85
2: Model year, 1972
C: Assembly plant, Jefferson Avenue, MI, USA
165666: Sequence number
E85: 440 cid 4 barrel V8 225hp
D34: TF727
TX9: Formal Black Exterior Color
MRXW: Trim - Leather Bucket Seats...