While driving my 96 L400 today my #1 injector decide to eject its self from the engine.

There was a load pop then fast popping and I pulled over and shut down the engine. While looking at the engine I had my son turn over the engine to hear where the sound was coming from. I could see the injector sitting high above the head, held by the the fuel lines. It appears that the threads let go in the head.
Does anyone have any ideas on how to attack this problem? Im in Nova Scotia and there are not of Delica Service and Part location here. Im thinking drill, and insert a heli-coil. {spelling?} Can you get larger injector holders so you can just tap new larger threads?
Thanks for your help Delica World.