Change Stats?

Is there a way to change non-hero unit stats on the fly without making a new unit each time? I'd like to have a buncha units that look identical and have the same name, except have random stats between limits I set. Ultimately I want to be able to take two of those units, check their stats, and create a new unit with its "random" stats based off of the other two. I don't really care how complicated this is, cuz I should be able to figure it out ^_^ thanks