From the same web site......
1977-1980 Mopar Body Code Plates (6 x 23):
A A A X B B B X C C C C C C C C C C C C C C C
D D D X E E E E X F F F X G G G G G G G G G G
H H H X J J J X X K X X X X X X X X X X X X X
L L L L L L L L L L L L L L L L L L L L L L L
L L L L L L L L L L L L L L L L L L L L L L L
L L L L L L L L L L L L L L L L L L L L L L L
- A - Engine
- B - Transmission
- C - VIN
- D - Lower Body Paint Color Code or special order codes
- E - Trim
- F - Interior Paint and Build
- G - Order Num.
- H - Upper Body Color or Two-Tone Color
- J - Vinyl Roof
- K - Order (U=U.S. C=Canada I=International)
- L - Factory Use
- X - Open Space
Prior to 1977, the engine code, transmission code, and VIN number were located on the bottom row.