Trust me ben, I lived in Sydney for 2 and a half years and the roads there are far worse than Adelaide. We have it pretty good I reckon, just fkn manhole covers everywhere! Plus we have the hills only 6km from the city with so many great roads for driving its not funny.

Anyway, back on topic, if you are up for a bit of modifying your engine and can do it yourself, as the guys have said- B20VTEC would be the way to go for torque