The hull stayed the same over the years. The interior layout and design changed quite a bit over the years though. Between the Jet interior layout, the different opening to the cuddy, dash layout, windshield options, and paint schemes there were quite a few changes. The last pic you posted is exactly what the dash looked like in mine.
I will be doing plexiglass behind the gauges, and I am painting (flake) the area where the switches are like they did with some of the later models.
