Less than 1/4"
It really is the perfect width for the car.
For axles, you need to go to a junkyard and find two 83-92 Rangers or Bronco II's with a 4cyl or 3.0, or a couple 86-97 Aerostars, or any combination as long as you have two vehicles. You need the driver side axle from a Ranger/Bronco II, or the passenger side axle from an Aerostar. Grab the brakes from these vehicles as well. You'll likely need to rebuild them, but scavenge what you can.