Nice job Rman with the fitting the cargo barrier and drawer system.
I looked at doing the same thing but was put off by the weight of the drawer system (I think from memory it was over 100kgs) as I did not want to exceed my GVM.
So before doing anything I decided to check my tare and consequently my payload by obtaining an actual weighbridge reading and comparing that to the GVM of my V6Tdi, (2945kgs).
Tare weight was 2660kgs which included myself, full tank of fuel, full size spare, tool box, compressor, fridge slide (no fridge), 2nd battery, tow hitch plus other minor bits and pieces which leaves me a payload balance of only 285kgs for passenger, food, bags, water and other gear and if towing anything, the BALL WEIGHT of the trailer needs to be factored in.
As you can see from these figures you haven't got a great deal of payload to work with, you may also find that with your V10 you may actually have a smaller payload due to the extra weight of your engine.
I suggest you may want to do similar checks just to make sure you don't inadvertently exceed your GVM!
TonyB