in search of the a-body wagon

Sorry to bust your bubble, but the last year we had A body wagons was 1966. Australia had a '67 up wagon that was not available here. My guess is you saw a Volare or Aspen wagon, especially since it had the cowcatcher bumpers. Next time you see it check the tailgate. If it is one piece and the window is fixed, you have a Volare/Aspen. Cool cars in their own right and seriously overlooked as fun rides. A 360 in one will keep a silly grin on your face and a big block pegs the fun meter.