I have all the dirty work done (removing old floor and foam) and have planned on replacing the floor with epoxy soaked marine plywood. However during my search for a plywood source I ran across MDO (medium density overlay), this material is made for outdoor use and has a very smooth finish in...
Thanks for all of the replies, sorry its been so long for me to answer but I've been building a gantry to lift the motor out. I have it ready to go now so I will post how the engine removal goes.
I have enough headroom in my shop to construct a wooden gantry, so I think I may go that way. The engine is a 165 HP inline 4 cylinder, does anyone have an idea on how much it weighs?