not sure about which box to go for as the rs2k uses mtx75 so would have the big flywheel/clutch which wont fit on ib5 fiesta box. might have to use 2.0 focus box as they have similar mounts and clutch/flywheel clearance. but then there will be issues with linkage. alternatively id be thinking fiesta mk5 1.8td box. that should fit, id have to check the clutch application to give a more accurate answer. ud still need to fabricate a mounting point for the engine itself though.