The RCV axleshafts fill up the knuckle and need to be assembled in the proper order for everything to fit. Insert the RCV axleshaft into the housing, slide on the orange RCV boot, and then load the RCV Performance Products CV assembly into the knuckle. Installing the knuckle with the CV in it is the hard part, as it almost requires three hands. RCV has a couple of installation videos online; one of them makes it look deceptively easy. After you get the knuckle in place, you can pull the boot over the CV, install the spindle lip seal hardware, and then insert the stub shaft. This process was the only way we could get it all together. Grease the RCV boot liberally to help with the installation. Torque the lower ball joint to 80 ft-lb, the upper collar to 50 ft-lb, and the upper ball joint nut to 100 ft-lb, in that order.