JH23
J = Dodge Challenger
H = HIGH

23 = 2 Door Hardtop
L0B or E (first digit of VIN sequence number 1=E or 2=B?)

L = 383 290HP 1-2BBL 8 CYL
0 = 1970
B = Hamtramck, MI or E = Los Angeles, CA, USA

26 = 26" radiator

The vinyl/cloth interior, 6-way, rallye cluster elevate this from your average 383 2bbl non-SE Challenger.