Following the format from above:

71 340 Challenger

JH23H1B383559

Built 5/07/71

TX9/H6X9/V1X/V7W


4-Speed (Console)
Power Steering (Fast Ratio)
Power Disc Brakes

Block Cast Date:
TBD

Block Casting ID:
TBD

Engine Assembly Stamping:
TBD

Block VIN Sequence Stamping:
1B383559


Original Engine Paint Color:
Blue

Oil Pan Design:
Stamped "294". Pan rail stiffening tabs - TBD

Power Steering Hose: (Fast Ratio)
Pressure Hose Fittings Part Number/Date Code: 2891232/091 1
Hose Date Info: 33xx-xxxxx with Yellow Stripes
Return Hose Vendor Code/Date Info: 83044/1051


Cylinder Heads:
TBD


Negative Battery Cable:
Appears original – TBD on data


Everything else isn't original to the car.

Cool thread!