I wanted to change to the horizontal type wiper as I hate the wiper being parked over the back window. I bought the later K11 plastic covered wiper, but went to fit it, and found the hole is bigger where it attaches onto the spindle motor, so it wont mover the wiper back/forth. I then bought the K11C motor, but the fixings that attach to the boot are different!, I cant even swap the brackets as the motor fixings to the braked are different. Its an early 2001 'March'. I have managed to take apart the original motor and turn the inner wheel 180 degrees so the wiper parks at the bottom of the screen, but I still cant fit the later style wiper :-(