OK, the 1st tag decodes like this then;
E55 - 340 CID engine
D32 - HD 727 automatic transmission
J - Dodge Challenger
S - Price class, Special (R/T)
23 - Two door hardtop
H - 340 CID
1 - last digit of model year, 1971
8 - Is actually a B, Hamtramck MI assembly plant
164054 - sequential VIN
FC7 - Body paint, Plum Crazy
H6X9 is the interior code, it breaks down like this;
H - High trim grade
6 - Vinyl bucket seats
XW - colors, black and white
000 - Upper door frame paint, none.
930 - Scheduled production date, September 30th, 1970 (1971 model year)
0147(50?) Vehicle Order Number
V1W - Vinyl top, white
U - Build for US sale
A36 - Performance axle package with 3:55 gears and max cooling and Rallye suspension
A46 - Molding package
C16 - Center console
C55 - Bucket seats
G11 - Tinted glass, all windows
G36 - Dual painted racing mirrors, driver's side remote
J25 - Three speed / variable wiper motor
J45 - Hood pins
J54 - Sport hood
J81 - Rear spoiler, wing style
M21 - Drip rail moldings
M31 - Body belt moldings
M42 - Front stone shield moldings
M44 - Hood rear and fender moldings
N41 - Dual exhaust
N42 - Bright exhaust tips
N85 - Tachometer
R11 - AM radio
V21 - Performance hood treatment
V6W - White R/T stripes
CID - It actually CTD - Sales codes ConTinueD on second tag.
The second tag would have listed 26 for sure, 26" wide radiator.