Sorry I never got back to you, however I looked into this and there are a few problems with doing it. There is not a good way to mount the seat switch, also I think the lumbar switch would have to be sourced from the driver seat since they have different plugs if i remember right.
Sorry I really don't know- if it were a question about the installation of the foam or upholstery I'd be all over it - but the electronic side of the factory seat are not something i have any experience with - sorry
