Yes , I have a 1979 cj5 which has a rear seat.
Rear seat, or jump seat
== ==
If there is a seat and a seat belt, yes.
No
Enough that with the seat all the way back, at 6'6" I can comfortably drive the car.
Not enough!
Yes, that should work.
Remove the back seat by pushing back on the lower seat at the front & lifting up at the same time. Then by removing upper portion of seat you should have enough access room to retrieve them.
first pull the seat forward then release the back by the leverl on the siides of the back by the seat belt lap harness
flip seat back forward, then grab release handle on the back of the bottom part of the seat and pull seat forward.
lift the handle on back of the seat
There are bolts on the floor at the front and back of the back seat holding it to the body.