Help... Vin #'s dont match

Seems this subject has been beat to death. If I wreck my 69 Dart Custom and have to clip it at the firewall and replace the whole front section from the frame rails forward with a clip from another Dart and now the core support number doesn't match my VIN, Have I committed a felony?

Not if you reported it to the DMV or your insurance company (which would make the notifications).