Reverse Light 67 Dart

The rim of the socket was crimped to the pot metal fixture. That is where the single contact bulb gets it chassis ground too. To whittle in a alternative socket should be something like this... Crown Automotive 3764863 Parking Light Bulb Socket Fits 84-97 Cherokee | eBay
It requires a different 2 contact bulb and the ground wire but it is at least similar, water tight like OEM.