I was scanning for other issues and found this thread- FWIW there is a better way than Rock auto (as good as they are, and I use them alot). Classic Tube has these mastered and will sell them in stainless steel- all 3 lines. All you need is the check ball section, or something to eliminate it. Cost me just a little more than your total investment (they mastered my lines and now have them on file) but it's a perm solution in the rust belt.Also, some never seize on the tube under the nut and on the nut threads will go a long way to making sure you can get them off is you even need to in the future.