oval craft makes some nice stuff.
http://www.ovalcraft.com/products.htm
i have one of their
oil breather catch cans that has a breather in the bottom, inside there is a funnel setup that catches the
oil. prob not 2l but is a nice setup. the guy who makes them said to use the -16 line off the dry sump tank, fyi.
http://www.lefthanderchassis.com/183.html
#156-02216 middle left of page.