the new spindles are great, easier to replace bent parts and such, make sure to.
1. Put the pin throught the castle nut.
2 Repack the bearings while you have the spindle apart.
3 Make sure you put the beveled edge against the spindle.
4 Put the zerk fitting on and put some grease in the new balljoints.
5. Check the 5/8 inch spindle nut every other race or so, especially if your running roadcourse, cause they loosen up if you dont loctite them.
6 PM the brakes while your aready there.
Mike.