Made some advancements today on the build. Cut out and installed two layers of foam board and a sheet of plywood in the forward third of the floor. Cut the other two sheets of plywood, will be going in soon. Cut out the rusted rear floor and replaced with sheet metal. Crossmembers good and solid. Also got some cabling done on the batteries. Still need to run the inverter cables. At least I have lighting and solar charging again. Will be getting the last two batteries this coming week. Would like to add up to 4 more, but have to see if they are really needed and also would need a place to put them.