A8 brake upgrade hardware? Am I missing some?
 

Got my upgrade kit from ECS tonight, 2 hangers, 2 rotors, 1 bag of misc hardware which contains 2 plastic plugs, 2 plastic guide sleeves and 2 steel guide pins. (seems like there should be 2 bags of hardware).

My questions is do I even need the hardware, or do I just re-use the current stuff?

I re-used the current stuff, shouldn't be any problem.