We used stained Luan to replace wall and ceiling panels. If you are on a budget, take the time to separate the panel from the insulation. Otherwise get some sheet foam and cut to fit. We used a pneumatic stapler to attach panels. Consider upgrading the cab over lighting whilst you have the panels off.
On a 1989 Dolphin, at assembly it appears the roof was put on after the walls were finished. We used a quarter-round on the transitions to hide any mis-match.
Cabinets come off pretty easily. Be sure to measure/mark/ identify where wiring penetrates panels. Take lots of pics!
