The dry sump systems for zetec and duratec engines from the UK are sourced mainly for the catterham/lotus 7 clones that will see sustained high g forces on race tracks. Unless the car is 100% racecar, I personally would say meh to putting one on a focus.
Parking Lot Hero
2008 WRX daily driver
2003 ZX3 23D Autox Car 42 FSP
"Hella Functional - Raced, Not Hard Parked"