Ze photos have deceived you!
I couldnt have done it and kept the small speck of sanity I cling to if I didnt remove the floorboards and tunnel. It was just too easy to remove those panels- I had taken them out before and put them back in with the minimum rivets needed; a few shots with the drill and they were right out.
And black to the biceps...tell me about it! I was black to the shoulders even with taking the tunnel off. And I never remember touching my face when my hands are black with gunk..