It's either a Dana 35c with an oval shaped differential cover with a black flat plastic snap in cover for the lubricant fill hole, or a Dana 44 with a more angular stop-sign shaped differential cover that has a threaded steel bolt with a square head in the lubricant fill hole. Looking at the fill hole plug is the easiest way to know for sure if you're not sure about the shape.
__________________ When you have a choice, buy American.
Benefits, I dont know. As long as you don't put 35's on it you'll be fine. Some people can get by with 35's, but make sure your easy on the gas when offroading. I have heard that locking it will cause it to explode. I would recomend putting a locker in the front if you are looking to go that route.
No more jeep for now
But I have free kandy and kittens in the back of my van
Yeah, I know. I've been there before. But on neither of my other Jeeps did I feel the urge to go to 33's. Actually, on this one I'm just planning (currently) on sticking w/ 31's. I'd rather go 31's and start saving the extra money for a locker, etc. I figure 31's w/ a locker is a better bet than 33's and no locker. I want to make sure the Jeep can fit in the garage and don't want to sacrifice any more gas then necessary... you know it'll go back up soon.