Changing the rear end over

Thanks guys, Muad's dad here. Where do I get this green kit for the rear bearings.
the rearend looks like it has a lot of pinion angle, pointing up..w.whats the correct angle.
also on the axle ends does this green kit come with the plate to secure axles in housing, taking place of that castlated nut, which is only one one axle. I understand why it's there but on one side only.???weird DODGE...nuff said Thanks D