I am the proud owner of a 99 Ram Sport 1500 4X4. The thing is, I am really hard on her. I pull and haul large loads and thoroughly enjoy jackrabbit starts, as well as pulling out stuck equipment. I am thinking of pulling 3/4 ton axles and springs (front and rear) and putting them on mine. I would also love rear disc brakes as well, and I want tough (or upgradeable) differentials. So my question is, what is a good year of axle? I read some where if you can get 03 axles, they're tougher and better... Thanks!