Timing belt change 3.6

Hello, my 3.6 MKB PT should change the ZR in the next time. I had sent an e-mail to the Ronny before and to get a price for the parts.
Can anyone make the ZR change here in the forum? I had thought of someone in the greater Cologne-Bonn-Düsseldorf area.
Time is not rushing and the car can remain quietly on site for some time.