I need some money for gears,and shocks,so I am selling my 12 bolt disc brake kit. I would like to get $150 for it. It's brand new,never installed and comes with the following. The kit includes two backing plates, two new modified rotors, six spacers, and six grade 8 bolts and nuts. This kit will only fit on a GM 12 bolt 6 Lug axle 1987 and older (Blazers and Suburbans 1991 and older). Here's what you still need to get:Other parts that are required but not included to complete the installation are calipers and other miscellaneous items such as seals and bearings (not required but highly recommended to replace. A list of part numbers have been compiled to the best of our ability on our installation page. You will have to options available to you when you choose what calipers to purchase. If you want an emergency brake then you will need to buy rear calipers for a 1976-78 Cadillac El Dorado. If you do not require an emergency brake then you can use front calipers from a 1971-78 GM 1/2 or 3/4 ton 4x4. Any ???'s just PM me. I am from Fremont,CA.