I hate to be a downer, but I personally witnessed a flooded BRZ:
That car was so full of mud that I considered it a complete loss and was hoping that it was never resold as a drivable car.
There was mud in places that made me positive that there was mud all through the car (the front hood weighed about 40 pounds).
I hope that the one you got was not this one. It will never be the same.