The TCI kit comes with new leaf springs, so there's no need to botherwith the old ones. With everything all welded up, install the leafsprings. The front of the spring has the pressed-in bushings; as for therear, place the busing in the eyes and slide the 5/8-inch sleeve intothe bushings. In the rear, install one end of the shackle to the mountand the other end to the spring. The fronts use a bolt that slidesthrough the OEM 1 1/4-inch hole, and the new spring pocket hole to mountthe leaf spring.