So I told my dad I would do the brakes on his '84 300d for him. In 1 1/2 hours I got the wheels off and two bolts loose... I was planning on changing the front pads and rotors. I ran into problems trying to take the calipers off. First of all, which bolts are required to be removed to get the thing off? And how in the world do you get them loose? I may not be a very strong girl, but surely an impact wrench should loosen them?!? Am I missing something? Please help