Aluminized styrofoam; 2 sheets required. Home depot vinyl roll $50, oem plywood underneath (not fastened to anything), rivet holes in floor epoxied and caulked, fuel lift pump access door. Details in YouTube video below.
400ah dual 8d lead acid 12v batteries. See blog for details. Bluesolar mppt 100/50 w/ bluetooth module and tablet, blue sea 12 fuse block, blue sea 12v outlets, blue sea 50 amp circuit breaker, 8 gauge solar cable from ebay, all other cables from walmart
Rear mounted shock absorbing superbumper (Impossible to remove without backing it into a wall to relieve tension), will bolt on a steel angle and then I can use that for rear storage when needed as a secondary benefit.