Hartley is now building a 3.0L V8 making over 400hp and 245ft-lbs.. at 200lbs, it's serious weight saving, although the engine may be a bit peaky for use in a 1300kg+ car!
http://www.h1v8.com/page/page/1562069.htm
http://www.h1v8.com/page/page/1562069.htm