Not done by me, I'm just uploading it here so more people can watch the final episode. Credits go to whoever translated it, it was published on 4chan by some anon in a thread that got very few replies. (https://boards.4chan.org/a/thread/178130426/back-street-girls-gokudolls)
For some reason the one who was translating the series stopped at the final episode, so anon decided to do it. Also retarded drama here, if you are interested: https://nyaa.si/view/1071743#comments
Since sub quality is related to this whole thing, I think these are very solid. There are 2 lines that didn't get translated for some reason, but their meaning are perfectly attached to the following line, so you won't miss anything.
[Anon] Back Street Girls - Gokudolls - 10.mp4 (141.0 MiB)