was a piece of cake! First, I checked the brake line fitting at the caliper to make sure I could get it loose - I grabbed an adjustable wrench (!) and it easily came loose. Then I called a dealer to get an OEM new one. I was going to replace the brake line also but I couldn't get the other end loose and was saving that for a rainy day. If I were you, I would replace the flexible lines at the same time. Bleeding the brakes is also very simple if you have a pressure pump, just make sure the reservoir doesn't go dry during the process and use DOT4 fluid. NAPA carries it.
This was my second set of rotors, so they came off easy - I greased the hub after the first set. The first set required a hammer to get the rotor loose.

If you take it to a mechanic to get it done, they will charge you an arm and a let for a very simple procedure. The new slide pins use a torx40 instead of a hex tool.

The brakes work so well that I can take my hands off the steering wheel at any pressure.

Klaus
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I still miss my 164