And the design Tito mentions is terrible. Took Ford from 1992 to 2008 to get rid of it and go back to end links on the front sway bar. But old or new, Ford's OEM sway bars, front or rear, are inadequate for a Class C.
There aren't that many bushings. Axle to Engine Crossmember, Radius Arm to Chassis, Sway Bar to Axle, Sway Bar to Front Crossmember.
Have you jacked it up at the outer ends of the axles and shaken/pried for worn Ball Joints?
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB