So far from wat FA20 turbo will be in the next generation Subaru WRX and than sometime later it will be in the BRZ. But the FA20 turbo to go in the WRX makes 270HP, while a turbo BRZ was rumored to get 300HP +
Greddy will most likely be the first aftermarket performance manufacturer to come out with a turbo kit. There will for sure be no turbo kit for the production Subaru BRZ. The rumors floating around on a turbo FA20 is apparently going to be going in the Impreza not the BRZ. Now whether in the future we will see a turbo BRZ is another issue.