I know a lot of you prefer the feeling without the variable assist steering but after lifting my 957 3" and adding 33" tires I would really like to be able to maneuver around parking lots single handed. Does anyone know what it would take to add this to their Cayenne? The option code is 1N3 for variable assist. I have 1N1 which in non-variable. Anyone know where to find the correct steering rack and what else is needed/involved?