Call or email Martin St. Pierre at Suprer Tuff Suspension, phone 859-332-2796, email mstp435@gmail.com. They have the bracket set in poly bushing sizes from 3/4" and up. The bushings are 24.95 set + 7.50 shipping, or the complete bracket set with bushings included is 79.95 plus 8.95 shipping. These were the pricing he quoted me via email.
Ron