My 1996 Ram 1500 Truck 5.2 started making a bad noise right at what I think is referred to as the drive shaft center bearing. It's where the front drive shaft and rear are joined together. Has anyone replaced this bearing and if so could you give me an idea on level of difficult and any tricks? I do most of my own stuff (brakes, water pumps etc..) so I'm not completely helpless. Thanks.