Need to replace the electric window motor on the front passenger door of my 5 Door A3, can anyone tell if the motors are different between 3-Door & 5-Door, Front & Rear (5-Door), Are they handed (drivers side passenger side), are Pre & Post facelift ones the same ???? Sorry for all the questions but I was going to try and source a second-hand one and wanted to make sure I got the correct one.