There really is no exact equivalent, but i can guarantee you that 20mcgs of bupe doesn't cover 60mgs of methadone, for anyone I have met. Maybe in someone's theory, but I have read it is closer to 1mg dupe is good for 30-60mgs of methadone. I was at about 200mgs methadone and 8 mgs bupe was about right, which is half what my doctor prescribed, but that is 50mgs methadone to 1mg bupe, was still a little off, but stabilized in a couple days.