Loctite Hysol 11C glue is actually a really good 2-part epoxy. I use it to repair lots of things. I keep it inside, but the shelf life has been pretty good, lasting over 2-decades. Used it last December and it was still good.
That Dorman kit worked pretty well for me, I think I repaired at least 2 W-bodies with it and never had a repeat repair. Shame it's not sold any more. It was supposed to be equivalent to OEM replacement ends and looked identical, so you didn't need the Moog blocks with them.