I will see about getting a model to take photos in the seat.
No. Their is only about 18" to 16" behind with the seat back . The seat is about 25" wide. The seat is back a little., Wife does not like the look out over the edge ! LOL But she is the same way about the RV/Semi.
As for the lateral support,its seams very good and love the arm rests ! Still need to fab the drivers side then I can tell you more.
I'm going to build two plat forms for our dog's to be able to look out the side windows. Will hinge them so we don't lose the storage.
Have pulled the driver's storage box and the radio stand on the passenger side.