This kit comes with new fabricated rear lift blocks and longer U bolts. Fabricated lift blocks will out last cast iron and will far outlast solid aluminum rear lift blocks. These rear lift blocks are also powdercoated for a long lasting finish. These are tapered rear blocks so you will keep the correct pinion angle. This kit is the strongest on the market. It will come to you complete with all the hardware and instructions. All MotoFab lifts products are proudly made in the USA with USA sourced materials!