What brackets did you have to grind the rivets off to change your radius arm bushings? If those were the rear brackets, I hope you replaced the rivets with grade 8 bolts, or that is an accident waiting to happen. All you have to do is unbolt the spring retainer at the top of the spring bucket, and then undo the nut at the rear of arm and push the arm forward to clear the bracket. I helped my brother change his in his Bronco which is almost the same as a 2wd only much heavier.