Need replace faucet and fix avløp of in kitchen wash sink

Hi, We need help for: 1. Install new faucet on kitchen wash sink (new faucet is ready) 2. Fix or replace avløp. The current part is "viega Modell 7139. 16", see pic#1. 3. Replace avløp connecting part in the sink, see pic#2. We might need help to order replacement part for both pic#1 and pic#2. It would be great if you can include that in your offer. The viega part is https: (info fjernet) ps: We only speak English. Thanks, Feng.