I ran 35's on my stock D35 with 3.07s for a few months. The spider gears ending up popping. Prior I ran 33's, and the spider gears popped as well. I had a light foot, it was my DD and occasional wheeler. Every Jeep is different. Best upgrade I did was HPD30 / Ford 8.8 with 4.88s, from East Coast Gear Supply, check them out. I ordered my axles on a Monday, and had them on Saturday. Do it right the first time, for safety reasons. There are cheaper ways, super 35 kit, or just upgrading the rear for now, disconnecting the front drive shaft so you can drive it. What is your current gear ratio?