I think that DT has a Euro GTS and it has the US plate knotch.
I looked at a euro 74 GTS and it had the small knotch 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.