Has anyone did the install of The Moss Polished aluminium fuel door? Was it difficult and does it really only take 10 minutes? And how was the fit?

 

I'm not sure about the one you described, but I did do the one they sell to convert the Cooper to a Cooper S door. It took roughly an hour, but was easy. I believe the one you have is installed similar to the Cooper S one. You have to raise the rear of the car and remove the tire. After that, it's a matter of unbolting a few bolts and installing the new door. It's actually very easy.