Stretched one row in the middle moving rear "kiddie" seats back one row and stretched the almost the equivalent of one row in front of the firewall making room for a nose locker "a la" PA32. It makes a 206 look quite small. More than just a few cm difference.
The C207 is a very good aircraft for tourist work.
The streched nose makes it interesting when making a fully loaded flapless landing. About as much view as in a C 185.
Not sure if I would consider it the same type rating as a C206. If it were me I would be checking out anyone who didn't have 207 time. Can be quite a different beast to fly to the 206, bit like C 185 to C 180.