If it is the ready to go system they send on a pallet for you to fit beware of the brackets being supplied with self tapping engineering bolts.That sounds good as you will get an invoice showing they installed it which might help insurance wise.
Good luck and let us know how you get on.
They are not up to the job and need replacing with bigger bolts and spreader plates.
I know someone with the facelift compact system and now the whole thing slides around the van.