Cm570 help

[Corzlot]

What I'm curious about is the difference. I had a cm870 as a donor for another cm570, and made it work with the manifolds, head, cams, injectors, and gears in front. But that was because the 870 needed to be rebuilt. But what I'm more curious about is what would stop me from swapping over sensors and wiring and putting my 570 ECM on? They are even comparable HP ratings. And I would swap over our manifolds, turbo, and any EGR delete I would need. The 570 runs, but major mechanical issues. Would the head be different? I can't necessarily see that. If it's just EGR and emissions, what needs to be changed?