The '93 W350 Dually 5spd is rated 10,100 GVW, 3. 54 GCW is 16,000/4. 10 is 17,000
The '97 2500 4x4 5spd is rated 8,800 GVW, 3. 54 GCW is 16,000/4. 10 is 18,000
The '97 2500 4x2 5spd is rated 8,800 GVW, 3. 54/4. 10 are both rated 20,000 GCW, camper group is recommended for this weight.
Nick