yeah the labor is going to be expensive, but I have no idea how much that might be as I do the work myself
but to get to the ball joint easily the knuckle will have to come out, that way you don't have to remove the arm itself and I can tell you that is not what you want to do if you can help it
otherwise the rivets will have to be drilled out and broken and the new ball joint should bolt right on, then it just has to go back together
I suggest looking a the bushings as if they need to be replaced the new arm comes with ball joints on it already, so it would be getting two things at once
