I can't help with the question, but politely ask for more pictures of your rig and set up. Looks intriguing.
thanks here is my link to ih8mud http://forum.ih8mud.com/expedition-builds/236987-building-landcruiser-overland-expedition-25.html
WOW! I did a quick look through your thread. Very cool indeed.
I'm going to contact the upholsterer you mentioned to look into making a replacement for my side awning. It's still in good shape, but figure it will be easier to make a pattern while it is intact rather than in tatters.
Wow, I jusT read your thread on Mud. I'm also looking to insulate the interior better and would love a report when you're done.