yeah... about the factory output numbers... ford australia quoted 240-260 flywheel horsepower for the 351 2v 2bbl released here (from 1970-78 or so, spanning a few models), but it only actually made about 205 flywheel horsepower, tested with the stock motor out of the car on an engine dyno. Why the discrepency is so large is hard to explain, other than a marketing tool used by Ford.