Worked as an engine builder for a main stream performance house a few years back in Australia were I live. We ran a 347 R+D build program to put into the main stream performance falcons. the engineres were happy with 250kw at the flywheel
with slightly ported cast gt40p heads and 1.6ex and 1.94in 62cc chambers cant remember the cam specs but they were nothing to crow about, but the funny thing was they liked to break the crank in about 4 places and basicly shatter the block all over the dyno cell and make a big f*#kin mess. so Ill stick to the dart and go with a more subtle rod stroke ratio.
I should mention that the car will be used as a sealed circuit track racer improved production if u like.