I was at the local LKQ P-N-P yard the other day, and they have a sign posted saying that they are no longer selling SRS bags. I assume that is because of the issues with the Japanese air bags. I just wanted to give everybody a heads up, to the effect that other yards will probably follow suit in short order. If you need an airbag, don't wait too long, or you may not be able to get one.
I converted my cars to aftermarket steering wheels and no longer have airbags. That may soon be the only recourse if yours goes off.