Pulling a 30' 5th wheel;
Is a dually really needed to pull a 5th wheel over a Single Rear Wheel truck?
Absolutely not .....however on many RV websites some seem to think only a one ton DRW is needed to pull a 5th wheel trailer. I made a living using one ton SRW/DRW trucks so I understand all about proper/safe loading.
My old '03 2500 Dodge/Cummins has a 13350 lb tow rating. I pull a 28'RK with a bedroom and big living room slides. Total length is 31' 10" and gross weight is 11100-11300 lbs on average. The truck is well under its GAWRs but is a whoppin' 200 lbs over gvwr :R. Great combo.
The F350 SRW 6.7 diesel won't have any issues pulling or carrying weight with a 30' 5th wheel or GN trailer...... and plenty of upgrade room down the road if it matters. Good huntin'