Hi!
Again, sorry that I´m writing in English...
I also am thinking about installing those two more speakers in my car.
Originally my car has that 5" screen and 8 speakers (8RM)....
Now I am replaced that with hacked mib2 high unit and 8" screen....
I noticed that mib2 unit is parameterized for Seat Sound System (9VD) althought my car hasn´t it....
That´s weird because the seller parameterized / coded the unit among my car´s VIN....
And I don´t have VCP.... only Vcds so I can´t change the coding back to 8RM....
That´s why I´m thinking about that retforit could be best solution.
What I think is problem, is that my car´s wiring originally hasn´t any wires in pins 10,14, 9, 13....
So in the back of the mib2 unit, those pins are free for subwoofer and center speaker...
But I can´t splice / join any existing speaker cables which is needed I think... or at least I don´t know how...
So is it possible to retrofit SSS for that my system at all??