You haven't found any at any auto parts stores because none of the auto parts stores carry it. I had the bolt back out the other day and have some thread damage too (see my HELP! thread). I have the red thread lock in, but I am thinking I will go Helicoil because I am feeling insecure about it. Here in Phoenix, the one place I know of that has an M14x1.5 kit is Mark's Nuts and Bolts. Check with whatever local bolt specialty shops you may have near by but be aware that it seems this kit is around $95 for some reason. You might find better prices online if you can wait for shipping.

Also, the bolt specialty shops I talked too liked to tell me all about how dangerous it might be to get the install wrong. I understand they want to protect their liability if you do get it wrong but don't be scared off too easily. Yes you will want to be extremely precise, but since your only other choice is a new crank shaft, it seems worth it to me to try anyway. I think I will take the time to try it myself in a few weeks, at least I hope my bolt will hold until then. I planned on doing the timing belt and water pump in a few months. I think after the last few days and the fact that I don't feel great about my current new bolt/threadlock solution, I am going to move my time table up to as soon as possible. Good luck with yours and let us know how it turns out!