Ok, I am not familiar with the EXT model of the Ranger line. Never saw one before. I put them together for a dealership so we must not have sold any.
It is a Ranger, the engine size doesn't really matter in this case and bp405 is on the money, you will have to pull the diff and repair the wires. Not an real difficult procedure, but it won't be a quick one. You will pretty much need to take the whole front suspension apart to get to the diff.
Most of it should be fairly self explanatory but you will be much farther ahead to have a repair manual in the long run. It will give you step by step instructions for getting the diff out, apart, repaired and back together.
Mine: 2018 Sportsman 850SP - 26" Bear Claw HTRs on OEM steel wheels(I really don't like the Aluminum ones)
Polaris Hand warmers, Mirrors.
Hers: 2019 Sportsman 450. 26" Bear Claw HTRs on Moose 427X Wheels.
2007 Sportsman 500 EFI, Polaris Winch, 25" Bear Claws QSC Clutch Kit, Hand Warmers
2001 Magnum 325 MOSE 12" rear wheel conversion. 25" Sedona Coyote tires
2017 Polaris Ranger 1000XP - Roof and front glass
2018 Kawasaki KLR650
2001 Magnum 325 Warn winch and Moose 60" plow-Sent to Daughter and Son-In-Law since his blew up
SOLD 2004 Sportsman 600 Twin