How much was this project and how long did it take for you to complete? Thanks for the infoHi,
i've done this project. It's very expensive.
You need the 2018+ Audio System, the 2018 upper display, Carplay Unit, The wiring harness to connect the carplay Unit (i've rewired by myself).
To get no Errors you need the 2018+ Radio Tuner, too. This is with XM integrated, so there is some rewire at the rear of the car to get all connected.
After i did this all i've Apple CarPlay but not Android Auto. So perhaps you need the Telematics Unit, too.