Tonight I started working on the floor of my NYB. There is quite a bit of rust and in my experience, it is always worse than it appears at first. I started by cutting out some of the material that was rusted from the area under the driver's seat. There are two layers of material in some areas so I had to cut away the top layer to gain access to the bottom layer. That is easier than trying to repair the bottom layer from under the car. http://www.nybclub.org/membercars/bradhogg/76NYB/index.htm#floor