As I recall my tr4 had drain plugs, about 3” dia to relieve itself.
My jeeps had drain holes in the floor pan. They had rubber plugs in them and when I would wash it out, I would pull the plugs to drain the water. You may want to purchase some rubber plugs and install them in the areas that holds water and make it drainable. I know I am making note of this so when I get to working on the car, I will put some drain plugs in.
