You should be able to get new injectors from just about any auto shop but they will most likely have to order them in.
If I was you I would check to see if the injectors are being sent their pulse signal first, easiest way to do this is to buy a special tester which is just a light which plugs into the same plug the injectors plug into. It will flash on and off if the injectors are being sent their pulse signal, if not you'll have to look a little deeper.
Nick