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I would replace the vibration dampers with new. The "noise reduction shims" and vibration dampers should be one in the same. If the new pads come with them then that's all you should need.
Don't worry about the hardware kit unless yours is damaged of has 150k miles or something like that. Porsche also recommends changing the caliper bolts every time you torque them but they should be fine to reuse if you make sure you torque them correctly.
You didn't mention rotors, but I would recommend measuring their thickness and if they are thick enough, have them machined to a flat surface. If they are too thin then replace them. No sense buying nice pads and not addressing the rotors as well.
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