manual to power windows

How difficult would it be to take the power windows and locks from a 92 Laredo and put them into a 91? I've got all the motors and switches and door panels, I'm just wondering if I will need some kind of module under the dash or to wire it into the fuse block or some other such thing. Has anyone already done this? how easy/difficult is it?

Look in the driveside kick panel. If the are empty plugs there then it might be wired for it.