2004~2008 Electric steering

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2004 Mazda 3 s
I have a 1st gen Mazda 3, I have electric hydraulic I want to put total electric steering on it that would most likely come off of a Ford focus. What modifications need to be done if any? I posted in the lounge because I think it would be the most relevant place but if I need to go somewhere else let me know
 
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