That part should just clip in. Any replacement radio should have its own fixing cage (support), specific to the radio, not specific to the car. The radio should be standard DIN size, so anything you fancy should fit.
Wirign connections will be a little more work. As the car is CanBUS, there are not the normal 6-8 connections. You cannot fit an aftermarket radio directly to the car electrics, you need an adaptor between them to read teh digital CanBUS signals and convert them to analogue fot the aftermarket radio.