theres a page of lots of different seats from different companies, all for the focus. browse around, and i'm sure you'll find what youre looking for. evrything from high end to nice cheap street seats =)
the procarparts.com has custom seat brackets that in my experrnce will bolt up to any of the china seats, recaros, sparco and corbeaus. the only ones we couldnt get it to fit was a bride holding monster. but they bolt right to the seat and bolt right n to the car.