Hi I bought my first Cummins, it's a 2000 6 speed, it's definitely Gunna be a piece to work on. But I've never owned one before and I would like to rebuild Everything and upgrade Everything to make this one of the most best pickups rebuilt. It does run good now. I'm just trying to see where I should start, what stuff I should buy, brands, etc. Thanks!

 

Why rebuild if the truck runs perfectly? You need gauges (fuel psi, egt's, trans temp) and a good aftermarket lift pump.