They got it wrong. In 1966 we raced the 2C in sprint races and not the 2E.
That includes Monterey with the extra span wing and end plates.
The 2E did not come along until after the 2F endurance car and a year later.
Also in the side bar by Phil Hill on Bridge Hampton a bolt did not
break in the wing brace system. A rod end broke. I know I was there
and at Texas before and after. The cut away drawing is a hybrid
of the 2C and the 2E. The watts link wing strut locating linkage type
shown was first used on the 2F. The version shown here is basically a watts link
with two rocker connected together rather than only one in the center as used
on the 2F. The initial 2E had a different nose than the pictures show.
The initial 2E had a movable lip on the nose intake while the 2C
had an internal butterfly valve to control nose lift. It is possible that
this nose was used on later versions of the 2E.

The chassis shown is a 2E as it had the smaller outside lower radius side
fuel tanks with higher capacity then the 2C chassis.

This is just the stuff I found at first glance.

Paul Lamar
 
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