You sure got lucky with this purchase you have no reason to worry if you got ripped off anymore. Now cherry on the top would be if the motors numbers matching.
E55 340-4 Barrel 69-73
D34 TorqueFlite Automatic Transmission
BS23
B = Plymouth Barracuda
S = Special
23 = 2 Door Hardtop
H2B
H = 340 240HP(net) 1-4BBL 8 CYL
2 = 1972
B = Dodge Main, Hamtramck, MI, USA
380414 Sequence Number '380414'
FE5
Paint Code: Bright Red / Rally Red
A6X9
Trim Grade/Style/Color
A = A Class
6 = Vinyl Bucket Seats
X9 = Black
000 Upper Door Frame: Full Door Panel
420 Date Built: 4 / 20 / 1972
173841 Order Number: 173841
FE5 Roof Type OR Color: Bright Red / Rally Red
U Built to Specifications for USA Order
B51 Power Assisted Brakes
C16 Console w/ Buckets
C56 Bucket Seats 1972 up
G35 Delete Standard Outside Mirror
J25 3 Speed Variable Wipers
J52 Inside Hood Release
J54 Hood Insulating Pad
M21 Roof Drip Rail Moldings
M25 Wide Sill Molding
M31 Belt & Hood Molding
M88 Quarter Panel Tape Treatment
N23 Electronic Ignition 72 only
N41 Duel Exhaust w/o Tips
N42 Chrome Duel Exhaust Tips
N85 Tachometer
R11 Music Master Radio AM
V21 Performance Hood Treatment
26 26 in. Radiator
EN2 End of Codes Assembly Line 2