There were four generations of the Montero. The first was from 1982 to 1991. This car had an I4 or a V6 engine. It had a very short wheelbase and was only sold as a 3 door vehicle. The long wheelbase model was introduced in 1983.
The second generation lasted from 1991 to 1999. The engines were either a turbodiesel or a V6. Once again the SUV was sold in both short and long wheelbase models. One feature on these vehicles that I like is the ability to switch from two to four wheel drive at speeds up 60 miles per hour. These vehicles did compete in the Dakar Rally.
The third generation lasted from 1999 to 2006. The SUV was completely redesigned, but engine options remained the turbo diesel and the V6. A five speed tiptronic transmission was added to the available options. Other transmissions included 4 speed automatic and 5 speed manual.
The newest Montero offers features like active traction control and a more powerful engine with less emissions.
These vehicles can be bought used from places such as the used car classifieds or from used car dealers, but you'll find better deals by looking at online auctions at places like eBay.