vectistraveller

Hi, Been dealing with a leak in the trunk of my '97 LS400 and previous threads have been helpful and also explained the mystery co axial cable that I found BUT I also found 9 nuts with captive washers lying around and 9 bolts protruding through the floor in the higher sections on each side (not the well for the spare), 4 on one side and 5 on the other. Any ideas? Thanks