Since getting my '04 2500 305HO 4x4 6-speed, I have learned a lot about mine. You need to go blogging. Like here. Geno's garage has some articles about different areas of concern for the different gens. For the early '04 there is the lift pump, and the horn pad, and the ripping out of the dash to fix the heater box doors. I've only had this thing since June '09. I love having the monster. My buddy has always driven a Dodge turbo diesel . He has had an '89 1 ton, '92 2500, '96 2500, and '01 2500. He has never have a major issue with any of them. I believe the running gear in my '04 is pretty stout. My only real concern is the 3 or 4 modules that have to communicate with each other just to get out of the driveway.