I did a search and found some differing opinions on RSC. I read that it is mandatory on all 2011 Ford E-series vans (both cargo and passenger). Is this a serious problem for future buyers who want to do a 4x4 conversion and install larger tires for off the highway use or bad weather? Hopefully, I can get a definitive answer from an informed, experienced automotive expert. If not, will settle for opinions and guesses. Stosh
The RSC vans have been out since 2006, and plenty of them have been made into 4x4.
There are some restrictions, mainly a max center of gravity (39" I think), but the extra weight of the 4x4 components usually keeps the cG under that, and adding more fuel capacity and underfloor storage can also help drop the cg back down.