Looking for post purgatory BAMF!Dean Wincest.....

[anyoung1984.livejournal.com]

Hey guys! I tried searching tags but couldn't find exactly what I was looking for and my Google skills seem to be lacking. I am looking for a moderately specific type of fic. Pergatory!Dean was beyond hot with the whole "it was pure"-savagery-lurking-under-the-surface attitude. So if anyone can rec a fic where either:

Established Relationship but Dean's new almost-darkside lurking brutality changes the dynamic of their sexy times is explored or...

First Time where an almost feral Dean doesn't even flinch about the whole gay incest bit and just gets down to ravishing Sam

I want it rough, and hot, and I want BAMF!Dean and overwhelmed!Sam...and I want it to be because of how purgatory changed Dean. If anyone knows of any fics like this I will be eternally grateful :)