[bvoelker]

Pg 150/151 (145 for top strap) in your owners manual shows attachment points. You are correct there is no latch system for the right rear seat. You can however thread the seat belt through the car seat and not use the latch system on the child car seat. All three positions have top strap anchors available. 2 possible reasons for no latch system on right rear. 1) easier access to storage under "single" seat of split rear bench, 2) I believe most T-Bone collisions occur to the passenger side of the vehicle. The right rear is probably the least safe position for a child in that case.
Just speculation... and experience.