After a long period of wondering how to build a HDR into a Avant, I started measuring, sawing and more to achieve this.
Because the Avant doesn't have a build-in VCR, there should be some space left for the HDR. So after several attempts to measure the free space left it was obvious that the HDR couldn't be placed with it's own housing.
So I started to make one which was suitable to place in the Avant. The idea was to modify the Avant without damaging it.
So, for the one who is interested, here are some pictures taken from the process.