Not surf related but have a 3/4 Cannon's Forge rnr bed for sale.
Uses Unwin / Koller rail system but can be easily modded to fit a van without.
It was made for our T4 - not sure if it fits other vans but could find out.
Bought last year, in v good nick.
Also have a full width rear folding Caravelle seat with arm and head rests and lap belt.
PM if you want more info
Based in NE