Included with the kit are unit-bearing bolts with smaller diameter heads. The CV joint is a bit larger in diameter than the original U-joint assembly. The smaller head bolt alleviates the clearance issue. Reinstall the spindle nut and brake components. Repeat on the other side and you're finished. It took Whalen about two hours to do the whole job-it would probably take us a bit longer, but it's definitely a quick and easy upgrade.