Electric powersteering?

I have a powersteering unit out of a Polaris Ranger, but tricking the unit with a speed signal is impractical. I work for Polaris and there's no way around it. I found the controller for the Saturn kit, and going this week to pick up a unit out of a junk yard. The controller is coming from Portugal and I haven't found one any where else. As for any hydraulic systems, that's out for me, the rack is a manual steer and not gonna change that, lol. Once I get it together I'll post pics. right now the AC has taken priority.