It is a Kenwood. The integration is done through an iDatalink Maesteo RR unit. They work with a wide range of cars and head units not just Kenwood. When you get the iDatalink module you connect it to your computer via usb, tell it which model car, head unit and wiring harness you have. It programs it for that combination. If you go to Crutchfield and tell it which car you have it will display a list of head units which will work with your car. Once you select a head unit it will present you with an installation package needed. The packages include the 2-din adapter, trim pieces, wiring harnesses and the iDatalink unit. It will also tell you what functionality the kit will allow. You can add it all to your order with a single click. I also upgraded the head unit in my 2017 Outback this way. You will need to run a new microphone because the one which comes with the car is powered. It took me 10 minutes to replace the factory one and run the cable through the headliner and down the pillar. Super easy. You will also need to replace the factory gps antenna. The factory one is located with the middle front speaker which is directly above where the head unit goes. Your new head unit will come with a microphone and gps antenna.

I believe other car audio sites will similarly present you with installation packages. I’ve been using Crutchfield since I replaced the stereo in my 1st car in 1985 so that is who I went with.