I have a call in to engineering to talk about that. We do not reinforce the cab area to my knowledge. That is a Ford thing. The only thing we changed was the floor build in the passenger area since the passenger seat is 2" further back than the driver.
So as I have stated before, the passenger side can NOT be installed in any unit prior to Feb 2013. However, to my knowledge there is nothing stopping us from doing the driver seat. I have been wrong before...but not often.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).