The last photo shows one of the magnesium bulkheads that, according to DeTomaso the Man and the Machines, was unique to the DeTomaso. The mechanic said this was "the heavyweight car," the lightweight car having had the flat areas between the ribs in the bulkhead removed to decrease weight.
The car had a Cosworth engine back in the day, too.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.