As promised a mockup of how i plan to make the floor. I was going to make this up over the weekend, but my carpenter has offered to make for me and so this will be much better then what i could do. Hopefully the picture gives you an idea of what i have in mind.
p/s The boot picture is not my car, i grabbed a screen shot off the net as i did not have a shot. My car does not have the split fold seats so i suspect this is a coupe, but nevertheless it should give you an idea.
E90 330i SE Auto Graphite Grey Metalic