I'm going to add a Toyota Sienna second row seat (the split bench seat, not the recliners) in my crew van as my second row. Then I'm going to move the Sprinter seat to a third row. I'm planning to place both seats on an L track to allow some flexibility in placement for differing travel requirements. I'll also be building a bed for the back but that's a much later project. I'll try to take pictures and post as this moves along. This would certainly be easier if I were a welder and/or fabricator!