It wasn't sold with a carb. A carb was separate to your choice.
If yours is for the standard holley bolt pattern, since the manifold was intended for racing I would think that the R-4781, aka 850 double pumper would be the one to use?
I know that manifold was also available to use the Holley Dominator as well. Check the bolt pattern to verify what you have.
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.