Matt
The zetec is much cheaper than the Cossie but it depends on what you're after. The Zetec has it's restrictions on the amount of HP achievable compared to the scope of the Cossie and available performance parts. For ultimate HP you cannot go past the Cossie...[:u]
I have been quoted around the $2500 mark from a wrecker for a low km Zetec engine complete with ECU although if you keep an eye out at the damaged car auctions you can probably pick up a whole car (Mondeo) for less than half of that! A complete car would be beneficial if you are getting it engineered as you NEED ALL the emission gear and the associated equipment that goes along with it (as in my case). Also with a whole car you can get a better idea of the engine condition as you can see the odometer and the general appearance of the whole car which you cannot from an engine alone. [%]