Longgone
John/68 Barracuda & Dart
My Barracuda is a late 68 build (June `68) and the rear glass is coded with a date of 6-68. My 68 Dart is a real early build (August `67) and the sideview mirror is coded J7 which is July `67. You might be able to close in on a build date by decoding your glass. Anything past a July `68 date and you`re likely to have a `69. Does your car have round sidemarker lights/patches where there were marker lights or rectangular? You should have a part of the VIN stamped on the engine and transmission if the engine/transmission is part of an original drivetrain.