There are medications that could possibly bring those levels back to normal without HRT (SERMs, AIs), but most physicians won't prescribe them for that reason as it is off-label. Of course the older you get, the tougher it will probably be to get "functioning" correctly again.
You can find some good info in this forum here: http://anabolicminds.com/forum/male-anti-aging/
Also, I have to ask, but what was your Post Cycle Therapy like after Superdrol? There's plenty of good info on P C T here if you need it: http://anabolicminds.com/forum/post-cycle-therapy/