Michael,
I know there are several latch styles. I just noticed this on ebay. I don't know anything about it or the seller. I also do not know if the price is reasonable.
http://cgi.ebay.com/ebaymotors/DeTomaso-Pantera-Trunk-L...dZ1QQsspagenameZWDVW
A friend of mine, Michael Shortt recently went through the trunk latch experience. Here is the link for his repair. He has an exceptional web site.
http://www.michaelspantera.com/brokendecklatch.html
Michael's email is michaelsavga@gmail.com
He is a great guy and will go out of his way to help.
Indy Dave
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.