I am in the process of designing a Storage Unit for a WH series (Grand) for a customer in Sydney. Slide out fridge, two big drawers, second battery storage, and a slide out table. Still in final design stage but measured the WH up this week and its has to go up the Brisbane for a new lift, snorkel, long range tank, cargo barrier, etc before it comes back to me for the Storage Unit fitting. The rear cargo area floor section is going to be removed (its hopeless in the WH just a plastic and carpet insert - no real tie down points). The Storage Unit will be bolted directly to the rear floor pan. I will have some photos up of this in coming months - its an October delivery.