Why is this so cheap ??

Vehicle Identification Number: jh23l1b393411
Vehicle Model: Challenger
Vehicle Class: High Price Class (Dart Custom, Dart Swinger, Charger Coupe, Coronet Custom, Challenger)
Vehicle Body Style: 2 Door Hardtop
Vehicle Engine: 383 CID/275 HP 2 BBL V8
Vehicle Year: 1971
Vehicle Assembly Plant: Dodge Main, Hamtramck, MI, USA
Assembly Sequence Number: 393411