I want to do a build using a re up 3.5 but I need to know how to easily distinguish the difference, I want to put it in my truck and rebuild the motor myself so used is no issue I will just need to get wiring and a computer for it, does anyone know where I can find one?

 

Timing chain cover: DE on the left, rev-up on the right. Scrap yards may have harnesses and ECU's, if not, internet.