BO or LO both letters ;The O here indicate either Barracuda Super Stock or Dart Super Stock
1968-74 models have the Vehicle Identification Number located on a stainless-steel plate riveted to the left side of the instrument panel, visible through the windshield.
1st digit: Car make:
*B = Barracuda
J = Challenger
*L = Dart
R = Belvedere / Satellite
V = Valiant / Duster
W = Coronet/1971-74 Charger
X = 1966-70 Charger
2nd digit: Series number:
L = Valiant (1968-74), Duster (1970-74), Dart (1968-74), Dart Swinger (1968-70), Dart Swinger Special (1971-74), Demon (1971-72), Dart Sport (1973-74), Belvedere (1968-70), Satellite coupe (1971-74), Coronet (1968-74), Charger coupe (1971-74)
M = Dart Swinger 340 (1969-70), Demon 340 (1971-72), Dart Sport 340 (1973), Dart Sport 360 (1974), Road Runner (1968-74), Road Runner SuperBird (1970), Road Runner GTX (1972-74), Coronet SuperBee (1968-70), Charger SuperBee (1971)
H = Valiant Signet (1968-69), Barracuda (1968-69), Barracuda 'Cuda (1969), Scamp (1971-74), Dart 270 (1968), Dart Custom (1969-74), Dart Swinger (1971-74), Satellite (1968- 70), Satellite Sebring (1971-74), Satellite Custom (1971-74),Coronet 440 (1968-70), Charger (1970), Charger coupe (1971-74), Coronet Custom (1971-74), Barracuda (1970-74),Challenger (1970-74), Challenger T/A (1970)
P = Valiant Brougham (1974), Dart GT (1968-69), Dart SE (1974), Sport Satellite (1968-70), Satellite Sebring Plus (1971-74), Satellite Brougham (1971), Regent, Coronet 500, Charger (1968-69), Charger 500 (1970-71), Charger SE (1971-74), Coronet Brougham (1971), Crestwood (1971-74), Barracuda Gran Coupe (1970-71)
S = Duster 340 (1970-73), Duster 360 (1974), Dart GTS (1968-69), Dart GSS (1968), Challenger R/T (1970), GTX (1968-71), Coronet R/T (1968-70), Charger R/T (1968-71), Charger 500 (early 1969), Barracuda 'Cuda (1970-74), Barracuda AAR 'Cuda (1970), Challenger R/T (1970-71), Challenger Rallye (1972)
X = Charger 500 (late 1969), and Charger Daytona (1969)
*O = Barracuda Super Stock (1968), Dart Super Stock (1968) K = Belvedere Police (1968-70), Satellite Police (1971-74), Coronet Police