Use your head here. Take the stock axles, now extend them 1.25" on each side. Stick the stock drum back on. What happens? The shoe will be outside of the drum!
If your going to use Mark 7 axles, use the disc brakes with them too, If you want to keep drums, get 2 Drivers Side Ranger/Bronco II Axles, or 2 Passenger Side Axles from an Aerostar