I guess on an E91 the amp goes in the recess under the boot floor cover?
My hesitation is that because I have non RFTs, there isn't a lot of room in there (the amp looks quite big) - mostly taken up by the 12v compressor and Tyre Weld. I also have a made to measure Hatchbag so fitting it elsewhere in the boot isn't an option.
Apart from that, it seems spot on!
2016 VW California 4motion due in March