Help! trying to find a certian rub

So a long time ago, I met a competition smoker whose pork ribs taste still stands out to this day in my mind, he was an acquaintance of a friend that I no longer communicate with, I was trying to figure out what rub he used and all I have been able to come up with thus far is #5, I know this is vague but thought I would post on the off chance somebody knew what I was talking about....I can tell you that I was at his lake house and he had boxes of this stuff, so it is something that can be bought in bulk, I can not for the life of me figure out who the manufacturer is. Thanks for any help.