I towed a skyline with my FG XR6T once. That's one of the reasons I sold it.To avoid it eating the auto gearbox you pretty much had to sit at 80KMH only. That's the reason ford has the limit on it as it knows the auto will eat itself when loaded up that hard.
Trust me, mine did.
Also look at the 80 or 105 series cruiser.
If going for a daily go the 105.
Petrols are cheap, and the straight diesel 105s are cheap too. Aftermarket turbod 1HZ 105s in good condition can be had for between 15000 and 20000 if you look properly.
Mine loves to tow, have had it loaded up so far with around 3T on the ass (moving plant equipment).
If you will never want to leave the black stuff for anything more than a dirt road, look at the 100 series cruiser. The 1HD fitted cruisers are more expensive but much more powerful diesel.
If you only have low amounts of money but can spend more on fuel the 1FZ petrol in the cruisers is VERY capable.
If you're looking at patrols avoid the 3.0L, avoid the 2.8L, get either the diesel 4.2 or the 4.5 petrol.
Personally I prefer the GU over the GQ especially if you wanted to drive it daily.