All explorers (I'm not sure about the 2002) use a 5 lug 4-1/2" bolt pattern, a 78 Bronco uses a 5 lug on 5-1/2" bolt pattern. I am not sure but I believe that all Bronco I's including fullsize and Early Bronco, use the 5 on 5-1/2" bolt pattern. The Bronco II then switched to the 5 lug on 4-1/2" bolt pattern that would carry over when the Explorer replaced the Bronco II.