Most people say if you put on a lift you need taller bump stops. If you put on a lift to get more flex use stock bump stops.
51-18011 Coil mounting kit with bolts for Early Bronco
51-18012 Coil mounting kit with studs for Early Bronco
51-18020 Upper coil retainer for Early Bronco
51-18030 Coil cup for Early Bronco