Nice Brat!
I remember the rear facing seats they put in those for a while. There's one of those around here in NW MO near the airport.
We had a wagon when my kids were toddlers that I ended up doing a timing belt job on (regular maintenance). Easy work on, with access to everything exposed up front! Years ago my mom bought the wagon of that era (70s). Crank windows, and FWD only, but excellent in the snow in the New Mexico mountains.