A very good approach in my opinion ...I can't imagine the streetability prospects for a GT3076R being fed by a 1.8 liter. I don't know any car that wouldn't be fast after you fully build the engine and install a huge turbo. After all, even some Hondas manage it! After having a half-dozen turbo DSMs, I decided I liked displacement along with my turbos. I wouldn't have bought a Subaru if they offered only the 2.0.
I approached my car is a pretty Audi-esque manner. I picked the Legacy so I could have more "car" to go with the drivetrain and at 3400lbs it's no heavyweight either. I now have the luxury of a stout 2.5 liter that'll go perfectly with the FPGreen I'm installing now. I won't win any dyno awards but the power under the curve will be very nice for a fully bolt-on setup.