Pull Out Trunk Shelf as an Add On?

[MANGO]

There are obviously the versions that did and did not come with the pull out sliding shelf but is there a way to do it as an add on retrofit to an X5 that currently doesn't have it?

I did a search both here and on Google using the various related words but couldn't pull up any discussion on the matter.

Also, aside from the obvious benefit of ease of load/cargo handling with the sliding tray, are there any drawbacks to having it?



Thank you,
MANGO