My 3/4 2500HD with 4.10 gears and 6.0 gas could.....but would struggle when fully loaded with all the toys and water. Going up the 15 El Cajon pass really sucks and will be pinned at 45-50 mph up the hill....God Forbid there is any stop and go traffic and I lose my momentum......and then the down grade? ugh.
Your truck should not really try to pull this TH around.
I'm sorry, just giving first hand advice, I myself would love a TH like this with all that wonderful space. Not trying to derail a for sale topic.
This is a Great deal for somebody, really clean and riced right - GLWTS