All the Eleanor guys do it. There are sources where one can buy a recessed door kit (tanksinc.com for one, http://www.tanksinc.com/index.cfm/page/ptype=results/category_id=60/mode=cat/cat60.htm) and then all you need do is fab up a tube to connect to the tank. I'm thinking a rear quarter type location for a coupe rather then the sail panel on a fastback. Not sure why you would want to but not that difficult to do.Speaking of "relocating" the filler.
Has anyone here done that or seen it done?