The critical dimension is the chair's width. Your 208 has fairly narrow seats and there is only small clearance between the seat outside edge and the side wall of the helm. If you are referring to the new 218 model seats, I am not sure if they will fit and still allow the seat to rotate. The 218 is about 5 inches wider than the 208 hull.
For sure, if the new seats you are referring to have arm rests, they definitely will not fit.