I hope that your 2.5L/3.0L idea is just that, an idea. Do you know the reason why Ford pulled the 2.5 SVT Duratec out of the Focus? Because it wouldn't pass a crash test head on... The motor is too big and intrudes into the passenger compartment. Well, if you like a Duratec in your lap after a crash.. Go for it! I could think of 1001 ways to modify the Zetec for more power than the Duratec could put out.. But that is just an idea of course.
Good luck on your new toy, Hopefully you'll never get in an accident if you do what you plan.
Dom
