Fender tag photo might help.
Here is the tag. I’m probably going to end up having to send the dash to ABCMOPARTS in Az. I’m just not sure how many blues there were and what would look the best. As mentioned, light and dark blend differently. My plan is the original exterior color with a white roof, even though it was black originally.
E61: 383 cid 2 barrel V8 290hp
D32: Heavy Duty Automatic Transmission
GB5: Bright Blue Metallic (Dodge), True Blue Metallic (Plymouth) Exterior Color
H2B5: Trim - High, Vinyl Bench Seat, Blue
GB7: Dark Blue Metallic (Dodge), Evening Blue Metallic (Plymouth & Chrysler) Int. Door Frames
810: Build Date: August 10
B36351: Order number
V1X: Full Vinyl Top, Black
C: Canada Specifications
22: Unknown
B51: Power Brakes
F81: Unknown
G33: LH Remote Racing Mirror
L31: Hood/Fender Mounted Turn Signals
M21: Roof drip rail moldings
M25: Wide sill moldings
R11: Radio Solid State AM (2 Watts)
END: End of Sales Codes