I have a guy wanting to use his original e78 from his 2011 L96 6.0 engine in a swap project. I have some concerns but I know so little about the e78 I wanted to verify that my concerns are legit and that I am not making more out of it.

First off I see evidence that the E78 cannot control discrete fans in any way

2nd I read that it cannot produce any sort of tach output signal outside of the can-bus info..

He wants to run a 4L60e trans behind it because that's what is currently in the vehicle (1997 truck), I have a feeling that isn't even possible.

I would prefer to just set him up with an e38 ecm, t42 tcm, and a harness to match and be done with it.

I would love some input on these ecms, or maybe even a point in the right direction to some other threads. I have searched around some, but I don't feel like I am getting the complete story. Any info is very much appreciated. THANKS!