I forgot to mention, but George Laird at Rovers Down South is a great source for Defender parts. Body panels, drive train, axles, you name it. He brings in containers weekly of lots of odds and ends. As an example, I just bought four new door blanks for my 110. They would have been three grand or more from LRNA, but from RDS, $1400.
here's his link.
http://www.roversdownsouth.com/