Love it
I read for a couple hours last night and it seems you could add the Cognito support kit to a slightly worn idler/pitman, or add to new idler/pitman to prevent from going bad in the future.
Cognito states no need to get beefed up idler/pitman with their support kit.
If these Mac parts are no less quality than what you'd get at your local Oreily Auto Parts store, Nappa, or Pepboys then I can't see why I wouldn't do the entire front end.
That's all I'm trying to determine...