Of course Tore :
V09 = special order paint
V6X = black longitudinal stripe 1970
Y39 = special order 69-71
EN2 = end of sales codes
M21 = roof drip rail moldings
N41 = dual exhaust
N42 = chrome exhaust tips
N85 = tachometer
R11 = am music master radio
G37 = dual chrome race mirrors
J52 = inside hood release
L25 = trunk compartiment light
L31 = fender mounted turn signals
M08 = sim door louvers
V1W = white full vinyl roof
U = US specifications
A57 = challenger rallye 72-74
B41 = front disc brakes
C16 = console
C56 = bucket seats
999 = ....
A6XW = .... (interior)
000 = full door panels
C08 = .... (build date)
K45009 = ....
E55 = 340cid 4bbl engine
D34 = torque flite trans
JH23H3B257206 is the VIN #
J : model = challenger
H : type = normal (non r/t)
23 : body = 2dr hardtop
H : engine = 340 4-bbl
3 : year = 1973
B : assambly = Hamtramck, MI
Hope this helps Tore. Maybe someone else can decode the couple of things I didn't know.