Sequence #
1 = built on assembly line #1 (of 2 at Hamtramck)
057802 = This is the order the cars went down the assembly line. They were arranged in this order due to parts availability, etc.

Vehicle Order # (VON)
415 = April 15th (1970) Scheduled production date (SPD)
214??2 = This is the # from the paperwork when the car was ordered/created. Something like an invoice #.

Vehicle Identification # (VIN)
J = Dodge Challenger
H = base model
23 = hardtop
J = 340 six pak engine (trans am cars only)
0 = 1970 model
B = Hamtramck Michigan assembly plant
308??? = 208???th VIN # assigned for that assembly plant in that model year.

Y05 = built for U.S.A.
Y16 = sales bank car. (not specialy ordered by anyone)
E55 = 340 six pak engine
D32 = 727 automatic transmission
D56 = 8.75 rear end with 3.55:1 gear ratio

sorry, ran out of time for the moment... I'll be back again later.

Tav