my old mans got a n/a 2ltr zetec in his dax kit car.
he was running dunnells 175 bhp kit. All this consists of is throttle bodies and new managment.
he bought the car with them already on it so i dont know how much it cost.
But recently he sent the head back to them had some more work done, new cams, new rod bolts and the rev limited raised a bit, now hes getting apx 210bhp. That work cost him less than a grand.
He strongly recomends vernier pullys as it took him ages to set his cams up.