Not yet a MOG owner, and have to decide between a +4 from -97 and a 4/4 from -06. Since I have the legs of a ballerina (i.e. to long) I must chose the car with the best/largest internal space.
Have been told that the above cars shares the same width and length in the "cockpit" ??
They both have pretty much internal dimensions, but you may find a difference between the models in the extent to which the seat slides back. Try both and see which you prefer, but if it were me, I think I'd go for the younger car as that will be a long door model and should be easier to get in and out of. The '97 might also be a long door model, I'm not entirely certain when they made the switch.