Can someone decode fender tag pls, 68Dart

It's a '67 Dart (no side markers on '67) with a '68 front clip (note the round side markers on the front fenders) and '68 tail lenses.

It was originally a 170 /6. It appears to be a Mopar mutt that was cobbled together with a '68 donor car for the body and a V8 dropped in for apparent track use (note heater core deleted along with interior fan and wiper motor) .