If you are happy to remove front bumper and some interior bits then its doable as a diy job, there is no full printed instructions as yet, what i have done for the other guys is send over random pics of the various aspects with some descriptions and supply my phone number to chat whilst doing it although
@Montecha has kindly taken some snaps of his progress while doing it and this will hopefully turn into an install guide in the near future, as above the two toughest parts of the install i would say are the mechanical fitting of the level sensors and the connections into the BCM under the dash as it very fiddly in a tight space
As far as coding goes its pretty straightforward but can vary slightly from van to van so what i have done for the others is just remote into their laptop and done it for them