I'm surprised nobody noticed the full width, one piece rear bumper. The one piece rear bumper can be seen on page 59 of Jan Norbye's book.
The two tanks in this picture both have pressure caps, both are associated with the cooling system, but as Andy commented the tank near the battery IS NOT a swirl tank, looks like a header tank to me. This car has the nice Ferrero steering wheel, but the lame "65 Mustang style" seats.
There is another version of this cut-away with a few changes. I won't give them away. A black and white copy of the second version can be found on page 11 of Jan Norbye's book.