Not so much detuned. This is the older engine used in the older
WRX (even those in Japan) I believe. Ditto with the Motor Image
STI.
Current JDM WRX uses the 250ps variable valve timing boxer DOHC
engine. JDM WRX STI uses the 280ps variable valve timing boxer DOHC
with twin scroll turbo and equal length headers.
I guess there is a market for it, but not really the ones in the
market for a WRX alternative. To be honest, if they made the GT-A a
more mainstream product and priced it about the same price as the
AT-R, I am sure there is a good market for it.