Regarding the floor panel, I had same problem with my 93 and I replaced it with plywood and epoxied over the plywood and then glued new carpet over that. It works well. the aluminum honeycomb is expensive at over $300 per 4x8ft sheet.
1993 Blue Stars and Stripes Prostar Powerslot 351HO
Mastercraft: Face It - If you are not a good skier behind this boat, you are not a good skier.