Own my HZJ73 (1995) for almost 14 years now. Bought it used, 3/4 of a year old. Love it. It's my DD
It's almost stock. Changed springs (parabolics) and taller rims (on an off-road trip)
Installed winchbumper and MM 10500 hydr. winch and the ARB-lockers myself.
When on a trip (have been to the sahara several times, into Russia en travelled to Kazakhstan (and back!) and many other trips) it's our 'camper' and we sleep in the rig. There are no back seats and I've build a 'floor' with an extendable part (over the seats) so we have a nice sleeping spot above all our gear, stored below.
For this kind of trips (weeks...Kazahkstan was almost 6 weeks) it's a bit tight. A 75 might be better. Another thing is that aux tanks and that kind of stuff are standard or readily available aftermarket options. For the 73 it's far more difficult to get them. I had to build my own aux fuel tank. The available tanks where either very expensive or too small for my purpose.