Let me settle this one for you both.
If the car came with say qd32 you can whack a qd32t in there (did this recently all legal)
That is because 4wd and factory sold here and both factory options nothing changes but turbo added
Import. Usually they updrage other things to deal with the turbo eg brakes this has to be sighted at an inspection station before and after the process and then you are all good and only need the piece of paper I your glove box
Nicks case if you go away from factor options then it's mod plate