My single build is under way at the moment I've pieced everything together myself though but it's a turbonetics hp-70 turbo on a whifbitz manifold, have uprated the injectors rail, lines, ecu (power fc), keeping the stock intake as for cams the car has some custom reprofiled cams in so I'm sticking with those.
So stock block with uprated cams, 70mm bb turbo, uprated fuelling and I'm hoping for around 600. It gets mapped on the 11th june so you keep on eye out for the dyno thread to see what it produces as it's reasonably close to what you're asking about I think