9-3 2.2 Tid 125 hp

Greetings Swedes! I am on the best way to switch to the “Saablager”, but there are still a few questions in the room that I would have liked to answer. Object of desire is a 2001er 9-3 with 125 dieselps;80000 km. Question 1: Timing belt or chain Question 2: Turbo whistles audible.normal? Did my 740 Volvo also make and run up to 285000km without probs.(sold afterwards) Would I look forward to a few helpful answers. MfG Devil