Wing or angel fic (specific and general)

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 Hi everyone, I'm looking for 2 things, please help me find them:

1. This is an old fic I read about one or two years ago, but now I cannot find it anymore. This is kind of a post-apocalypse fic with an outsider's POV. The brothers are now a legend. Sam is a Prince/Lord of Hell, while Dean is a General or some kind of leader of the angel. They go to a bar and meet a bunch of hunters. The hunters try to kill Sam by the Colt but they get Dean instead. Then Sam is angry and kill them all, but I'm sure Dean is not dead in this.
This is a pretty good story. I really want to read it again so please help me find it. Oh, I believe this is a wincest.

2. I am looking for some wing or angel wincest fic but I can't really find what I want because most angel or wing fics I got are Dean/Cas. Thus, I really need some help finding these fic, please. 
I already read all wing!fic in ifyouweremine delicious so please don't rec them. And I prefer bottom!Dean, but If you have a really good story and it bottom!Sam then give me a warning please.

Thanks in advance. 

FOUND: 1. On a Wing and a Prayer by sinestrated, link in the comment.