I just bought a 03 LT ext.cab black duramax last week and just getting into it a little bit and beginning to learn stuff about it. Unfortunately automobiles & modding them is my sickness that i like to call a hobby. I also have a '98 Z28 thats built to the hilt for street/strip being forged, cam'd, etc... Just wanted to say hello to the Duramax owners and maybe some first words of advice I may need to know before I turn this truck into a monster. Thanks