The super sprag is the first upgrade you should do to the 727. That is the part that fails and the super sprag is a better design.

The band on valve body is next because that will hold the LR drum if the sprag fails so you don't get spin up.

Note/The band on valve body DOES NOT prevent the sprag failure from happening.

After that if you want to you can use an upgraded drum. I have been using the full metal jacket drum from TCS because it is lighter than the steel drum.