I just purchase a 1992 YJ and plan to use it take my 4- and 6-year old grandsons to and from school. Before I take the boys anywhere my daughter will insist I have a safe rear seats/bench to accommodate child seats with a back (not booster seats). Since the current bench has a low back, I need to change this out for something with a high back. The current bench is as pictured. Any ideas for an aftermarket replacement bench/seats?