You might consider these aux tanks. They are located behind the seats on
each side. Darryl Greenamyer has them in his Legacy. These are pictures of
mine at the enclosed link).

http://www.lancair-builders.com/photopost/showgallery.php?cat=500&ppuser=18




I'am considering buuilding a Legacy and was wonder what options are
available to extend the range of a Legacy?  I'd like to be able to fly 2000
miles non-stop.