Right to what Justice said. But, you will also occasionaly see old 2-doors that are called Montero Sport. If it is a 90s-00s Montero Sport, it will be as Justice said and a 4-ddor. An 80s Sport will be a package on an SWB.

Discussions here that say MS will invariably mean the 90s-00s specific vehicle. (aka Challenger in other markets.)

Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
Daughter's: 06 Eclipse, Keeping it Mitsu!
FSMs: MitsubishiLinks.com