Recently bought a 447 dualiner and after some ideas for storage in the back. It has comfort 1st row and all headlining and sides. My current thought is a shelf (of sorts the same height as the folded seats with a couple of hinged sections to aid access and create a level platform and then secure the frame to the tie down rails. Also does anyone know the there are any captive nuts for bulkheads, etc hiding behind any of the C pillar trims? Thanks!