You can guarantee that every Jap tuning company that is left will have their hands on one and be making kits. After all, if you can work out a forced induction kit for stuff like the 350/70Z, which has even less room under the bonnet, this should be a p.o.p. for HKS, etc.
Interestingly I read a Subaru press release that said that 40% of buyers in Japan for the BRZ were over 40. Seems like people like IMOA are a key demographic!