I don't think there is one single common part in the RS2000 4x4 and EsCos drivetrains since hte EsCos is practically a 4x4 Sierra in disquise. The Jaq X-type was mentioned because that has the same floor pan and drivetrain than the 4x4 Mondeo. However I don't think they offer the 4x4 Mondeo anymore which was rare to begin with. Does anyone know how similar/different the Mondeo/X-type 4x4 drivetrain is compared to RS2000 4x4?