My first car did indeed have a hole in the floor. Old Volkswagens had the battery mounted under the back seat with no drip pan. Battery gets old, leaks, corrodes a hole in the floor. My vintage car came with a vintage board to keep the new battery from falling through. Oh, if the battery shorts out your backseat catches fire. Lucky I was on a residential street so I could pull it out onto the road to stamp it out.
My first car did indeed have a hole in the floor. Old Volkswagens had the battery mounted under the back seat with no drip pan. Battery gets old, leaks, corrodes a hole in the floor. My vintage car came with a vintage board to keep the new battery from falling through. Oh, if the battery shorts out your backseat catches fire. Lucky I was on a residential street so I could pull it out onto the road to stamp it out.