Door Striker Damage

In my 'Cuda's further attempts at staying retired from the street, the door striker on driver's side has broken away from the body. The previous owner had done a really poor weld job around the striker bolt to "repair" the broken metal. I was hoping to avoid having to fix this before I got to drive the car. Does anyone know of a repair kit for this problem? It looks like the reinforcement plate behind the striker is missing. If need be I can go to wrecking yard to get the reinforcement plates, but I would prefer new ones if possible. Thanks!