This year's support race will be cars from 1949-68.
This will include Ford GT40, Porsche 908 and 910, Alfa Romeo T33/2 and Jag C and D types.
They say that they will only accept cars that can lap at a reasonable speed.
http://motorracinglegends.com/index.html?subj=Le+Mans+LegendsPersonally, I love to see these cars, particularly from the inside of the Dunlop chicane where you can graphically see the roll and weight transfer.
Aricus