1968 Dart radio bracket question

Hi,I have a 68 Dart 270 that was missing its radio. can anyone here tell me and show me what mounting brackets I would need to install the radio and where they would go,both on the radio and dash? It appears there are two large screws that mount it to the front sheet metal "dimples" in the dash,but am not sure what else is needed to secure it as it was from the factory. Thanks