This unit is a TCI 4 bolt unit. Since no instructions are provided with this. It really was simple. And for $75 a worth while upgrade.

Tools:

Block of wood
3/16 allen head socket
thin blade screwdriver
dead blow hammer
3/8 ratchet and extention.
First assuming you have your old sprag removed. Take a moment to clean up the area.

This sprag here comes from Summit and is TCI brand. For mild street use I felt the 4 bolt was plenty.

First inspect new parts. Make sure all the parts are there....