The answer is yes although it’s probably not the easiest job in the world. I looked into this before & there are a couple of threads on the Transit forum where someone has done it. There is a manual you can dl from Ford that shows all the mounting positions, etc. IIRC some non-crew cab vans have the mounting points for the folding seats (which are in different places) already, think it might be related to trim level i.e. Limited and above but you’d have to check obviously. If your van does not already have the extra mounting points then it becomes a lot more difficult.
The folding seats are available from eBay or sites (Van Demon maybe?) quite often as companies take them out of new Tourneos to do wheelchair conversions.