Hi Mate,
Sorry for my late reply...havent been able to do much on the moke lately due to other things.
Yes i re-created the inner hull by using the repair panels available from mini sport, they have the bottom inner hull section available that goes underneath the ribbed part of the panel.
Both sides are available.
When i replaced my floor pan i drilled some holes inside the back part of the side box compartments on each end so i can spray some cavity wax in there and keep future rust at bay. Capped off with a few rubber grommets.