RPN Havoc

Anyone know anything about RPN Havoc?

Methylepitiostanol is it's real name. It is also referred to as Epi/Epistane.

Is it any good for growth?

It is much like Anavar or Winstrol. It is a DHT derivative that gives dry, lean gains and good strength gains at ~30mg daily for 4-6 weeks.
So it isn't too good for bulking up, but it should work well for recomp/cutting.