I would think the drive axle would use standard Ford F53 shocks. The tag axle is added by the motorhome manufacturer after they get the chassis from Ford, and I doubt of they swap out the shocks.
The Mor/ryde tag has its own shocks. You can find owner and service manuals for the Mor/ryde tag axles here:
MOR/ryde - Products - Documentation
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL