How many possabilitys are there for a nice toy hauler with a 3/4 ton diesel.
Lots of possibilities but the possible size is gonna' depend on year model 3/4 ton truck.
A new or older 3/4 ton diesel truck has 6000-6200 RAWR (suspension/wheels and tires). They generally have payloads on the rear axle from 2800-3200 depending on actual scaled weights.
I had a 3/4 ton Dodge/Cummins with the 47RE and sickly 3.54 gears with a 9800 lb tow rating.
The new gen 3/4 ton diesels have tow rating up to 17000 lbs HOWEVER the new gen 3/4 ton diesel is still limited to those 6000-6200 RAWRs.
Pin weight and truck payload are what hold back a 3/4 truck. Especially on multi-slide trailers. Too keep pin weight down and have payload for truck passengers fifth wheel TH's need to be in the 12-13k gvwr.