Yes they fit fine if center bore matches.
https://www.wheelfitment.eu/car/Ford/Transit Connect (2003 - 2013).html
Your speedo will read a tiny bit slower than with factory size.
Thought I’d give an update. I got a 2013! The 9’6” board actually does fit in the car if you take the passenger headrest off. Definitely need to tie it so it doesn’t fly forward though. Just using a bungee cord for now.