my friends cortina is on a 2 litre zetec, home made plenum, jenvey bodies, ford injectors and DTA ecu, car made about 170bhp (bg std engine at that point).
he's since gone for decent cams and remapped it himself, car is now around 190bhp and pulls like a train!
engine was £400 from a low mileage trashed mondeo, plus some arp rod bolts!