Hey allan.
my father has a spray painter at his work shop who owns a 180sx with 612bhp to the wheels 2L sr20 no stroker kit etc.... thats pretty impressive for a "cheap jap" engine [:x)]
he is hitting it out with some bird here in queensland for the highest hp sr20 engine... and its not just a dyno queen.. he ran a 10.9 @126mph a few months ago!
Phil will make the power... probably needs a rebuild as the engine is getting tired of the abuse!!! but definetly 300rwkws is achievable.