Looks very similar to what I have in my Group 4. Photo, specs and builder are shown in the link below. From what I have been told, those bolts up through the valve covers help keep everything lined up and in place beyond 6,500 RPM (not sure if that is BS or what). Shine that puppy up, it will look like mine when done.
http://www.poca.com/index.php/...g2_imageViewsIndex=1
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.