Rob I have one of those, an after checking it out, it MAY seem a bit TOO much effort, BUT, if you WANT, if you score directly downwards at the base of the doors, back seat base, and around the console, you MIGHT be able to remove the floor completely, and
just install a peice of sheet plastic as a new floor. It'll only be deeper by the depth of the old floor, but it may make your interior look a bit better. I've done this on a few of the AMT 65 GTO'S and it worked out real good.Hth.