Jobs all done, everything went fine. just re-used the auto harness on the donor engine.
I didn't have to replace anything in relation to the ecu or immobilizer, swapped over gearbox components.
Some may have got confused with the swap .. basically I was using an engine from a manual setup and swapping it into my auto ek.

Ps. thank you all for the advice and support
let me know if you have any questions... was a pretty simple swap