the one thing I feel everyone is missing is the D35 doesn't break unless abused. A young driver without years of experience and a locker don't mix because of that lack of experience. I don't see where you are from, but if you drive in the frost belt that lack of experience can turn deadly teal quick, ON ROAD. find a limited slip in a bone yard, and install it. Go through all the headaches of properly setting the lash since you will be changing the carrier (I'm serious) use it as a learning experience, start to finish, you will have a better jeep in the end, and since you need to pull the drums and the c clips, take the time to get the disc brake set up from a matching year Grand Cherokee, and do that conversion at the same time. You will be far ahead of those who blow money to have it done because you will learn more. And when you run in to issues down the road, you will know the driveline and bakes better than anyone else. Its how we did it "back in the day" when it wasn't about money, just sweat equity.