My old mans CV8 Monaro has just under 400rwkw with a 11psi manifold blower, water-air cooler, cam etc etc. There really isnt much that can keep up with it on the street. I was amazed how well it hooks up off the line aswell (it does have a lot of suspension work and decent tyres though), we beat a EVO X off the line which i was absolutely amazed by. Maybe the dude in the Evo didn't know how to launch it properly but still. But yeah, a LS series engine with a form of forced induction really does have the best of both worlds, big displacement and plenty of airflow.