XC70 2012 Four-C rear shock absorber and again solution for a funny noise

Hello, I’m looking for shock absorbers for the rear with Four-C, because I just want to have it replaced completely. Found in front stress-free by Monroe, even quite inexpensive. I find nothing for the back. Does someone have an idea, or the part number at Volvo/ alternatively Monroe? Otherwise I have a funny noise for weeks, which maybe already an incl. solution knows. When driving/rolling slowly to a standstill I have a ringing/ squealing with a very bright tone, d I would rather be located in a loose sheet metal/storage. Can be heard so from 50km/h down when the window is open, not depending on the speed or angle of the steering angle. It is gone at a standstill. There is nothing to hear when driving faster, it doesn’t sound, it’s somehow gone. In the heat it gets brighter/squeakier, it seems away when wet. I am 3000km through Norway…it’s not worse, but always there. Places you can’t hear the noise…just come from below. e Floor waves, smooth asphalt and rollers at 20km/h are enough. Before Norway I was still in control at Volvo..they had the part on stage, with wheel load, hung out….there was nothing to be found…Bremsen OK, exhaust system OK…no longer. Curiosities: the same sound also makes the bells of sheep on Norwegian mountain slopes. That was late evening at the hut, standing in front of the locked car, then the time where one starts to believe that the flap is due. Ideas? Beautiful Grü INGREDIENTS