I have a friend that took pheraplex and superdrol for more than four weeks. He did 6oxo and TRIBEX for his pct, and did not have any estrogen related side effects.
Yet, I've read a lot on different message boards about people's superdrol cycles and a lot of people get gyno once they get off the superdrol, even with standard nolva and clomid (prolactin induced gyno). I wouldn't play roulette with your body man get some damn nolvadex and vitamin b6. You can take the tribulus alongside this for faster recovery too.