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Global West Suspension sells a Del-a-Lum bushing and shackle kit (to be used for Caltrac Bars and Caltrac leaf springs ) for the 1964, 1965, and 1966 Mustang.Global West Suspension Advantage-Del-A-Lum Shackle Kits:Del-A-Lum bushings are perfect for street, drag and autocross applications. Installation requires the bushing housings to be pressed into the frame and the leaf spring eyelets.Inserts and thrust washers separate the housings and springs from metal to metal contact, which provide total isolation. The inserts and thrust washers also provide a bearing surface for the bushing.This design makes the bushings operate similar to a bearing. Grease fittings are installed and the housing is grooved internally for grease penetration. Del-A-Lum bushings also provide lateral control of the leaf springs.Global West Suspension: Tech TipsWhen a vehicle leaves the line hard in a drag race application, the forward portion of the leaf will try to deflect inboard. This action will make the car walk sidewalks. Del-A-Lum bushings will stop the leaf from walking inboard.For drag racing applications, a lot of people place a solid type bushing in the front eyelet and leave the rear bushings in rubber or poly. Do not do this!!! Rubber and polyurethane will allow the rear portion of the leaf to walk laterally. If the front bushing is solid mounted, the length of the leaf becomes a long torque arm reacting on the forward mounting point. It is trying to rip the mount out of the car. The solution is to use a Del-A-Lum shackle kit and remove the problem.Autocross applications: Leaf spring bushings during hard cornering allow the rear end to move laterally. This creates a rear end tracking problem that is evident with tire rubbing and sluggish suspension response. This can also promote oversteer.Premium Del-A-Lum Bushings and Shackle Kit for 1964-1973 MustangQuality is at the heart of our1964-1973 Mustang Del-A-Lum Bushings and Shackle Kit, ensuring that every component meets the high standards expected by classic car enthusiasts. Our commitment to customer satisfaction means that were always here to provide support and assistance, whether you have questions about installation or need help selecting the right parts for your project. With comprehensive instruction sheets and detailed video tutorials, we make it easy for you to achieve a professional-level upgrade on your Mustang. Plus, our knowledgeable team is just a call or message away, ready to guide you through any challenges you may encounter. Explore our extensive range of related products, includingFord Mercury Car Parts,Mustang 1964-66 Parts, and1964-66 Mustang Rear Suspensionto find everything you need for your classic ride.