I got this from Nandi (one smart bro!):
You can run 50mcg a day and with the steroids GAIN muscle not lose it, while at the same time burning fat. Below is a link to a study where they did just that. With all the Anabolic Androgenic Steroids (AAS) you are taking compared to these test subjects, 75 mcg would probably work. I run 50 mcg during almost every cycle now since I read this study:
I think this has been posted here before, but the result is that when 50 mcg of T3 is taken with 200 mg of test/week, you lose fat and gain lean body mass, whereas if you take just the T3 you lose fat AND MUSCLE.