Heavy duty fan clutch?

[eaglescout526]

Is there one? I feel like there has to be something out there in both rotations for the 2.5L. I am curious if it works better out here in the heat for cooling. Just looking to help the condensers out, not really having any cooling issues.

[Pete M]

what makes a fan clutch "heavy duty"?

[eaglescout526]

I think it has to do with how fluid in the housing locks up at what temps and how soon it fully locks and how much faster one will spin. 
 

I did some research earlier and found some for CJs and SJs but not many give a lot of specs.