I used poly bushings on the Demon. I have a 75 V-8 K-frame and disk brake set-up under the car. It allowed me to use a cop car steering box from a Diplomat and also BBP wheels. If you are using a late model front end on an early 3Gen car, be sure to use the steering box, pittman arm, idler arm and cross link from the later model car. You may also want to grab the rear axle assembly from a 73 disk brake car, for the BBP hubs, too.