In USA, The parts are available already. In USA you can buy it for $48 & tesla will offer to install (at least they did for me). I did not have them install it. I am in no rush as I have a TParts module already.
You have a new model y with missing data cables. It would be curious if tesla will do the install for you and give you cables.
@TomServo if you request the part from tesla via the app, let them know you’d like them to install and you also need the data cables. The part numbers are listed in this thread I believe. Would be interesting to see what Tesla would say.