May I suggest that you check with Remco Towing, www.remcotowing.com ? They are the exerts and will tell you if OK as is or needing some mods. There is an application list on their website or you can call them and ask - they are friendly and honest folks.
The earliest info I have, which is from the 2002 Motorhome Magazine Dinghy Towing Guide, says the Ranger 4x4 automatic is not towable as is. That would probably mean it needs a drive line disconnect to make it towable.