What a really great find!
Decoded the numbers
B7 blue is one of my favorite exterior colors, not many made in this color.
The 4 speed, blue interior, factory hood pins, factory am fm and the molding packages make this a cool looking Cuda especially with the B7 blue.
Best wishes on this one.
I'm jealous.
BS23:
Plymouth Barracuda
Unknown
2 Door Hardtop
NOB: 383 330HP or 335HP 1 - 4BBL 8cyl
1970
Dodge Main, Hamtramck, MI, USA
276481: Sequence number
E63: 383 cid 4 barrel V8 H.P. 335hp
D21: 4 Speed Manual Transmission
EB7: Blue metallic exterior
H6B5: Trim - High, Vinyl Bucket Seats, Blue
000: Full Door Panels
313: Build Date: March 13
056187: Order number
EB7: Top Color
C55: Bucket Seats
J45: Hood Tie Down Pins
J54: Sport Hood
M21: Roof drip rail moldings
M25: Wide sill moldings
M31: Belt Moldings
M88 Decklid molding treatment or Qrt Panel tape treatment
N41: Dual Exhaust
N42: Chrome Exhaust Tips
R35: AM/FM Stereo Radio (10 Watts)
YO5: Unknown
EN1: End of Sales Codes
__________________________________
I'm guessing the the M89 was M88 (car has a lot of molding)
No code listed for M89. Either a molding package or the qrt panel tape
Again best of luck with the car.