Hey, guys! Glad that I found this site. There's all kinds of great info here. I have a 15 Titanium that I got an awesome deal on and have done some camping in with seats flat. But I knew that something was missing. It was a no-brainer that by removing the seats I could gain at least 6" of headspace. r1alvin and Don Shockley, among others, have provided some great info which motivated me to do a more thorough build out. At this point, I've got the rear area stripped and ready for the flooring. Thinking of going with a dense foam for sound/heat barrier, then install .05 sanded plywood topped with adhesive vinyl flooring.
Anyway, that's where I'm at for now. Any input and suggestions would be awesome. And I think it's worth mentioning, I'm on a tight budget. Who knows... I might become a permanent van dweller.