FJZ80 Real World Towing Capability

[TacoLand]

No I want a diesel Toyota which is completely swapped with everything and the only Toyota thing is the cab, which can tow my 10k trailer, take kids to school, go camping, bounce off rocks on 40s, race in sand dunes and have my wife drive it.

Is that too much to ask for?

I've towed ~8k in my stock-ish 200 series a few times through the mountains. It's decent, but it still is not a good tow rig. Not much of a chance I'd try 10k in it. And absolutely zero chance I'd try that in my 80, especially on 40s. Not enough wheelbase or weight. Not to mention the suspension that would be good for dunes is not the same as would be good for rocks, neither of which are good for a 10k load on a short wheelbase lifted vehicle.