Audi parking system retrofit?

My s6 came with an aftermarket rear sensors, however im wondering is it possible to retro fit the oem front and rear parking sensors and have them integrated through the Audi MMi system? Can i fit them to existing bumpers or are different bumpers needed? If anyone has any advice it would be appreciated

what aftermarket sensors do you have? Did they install a speaker so you can hear it beep?How about a picture of your bumper so we know where they are currently located.

I’m not sure what rear sensors are fitted. Here’s a pic

http://imgur.com/XynVuao

If you can explain more about the aftermarket sensors we could probably help more. From a techncal perspective you should be able to just plug in sensors to the S6 and code the sensors to work. The modules should all be the same