If you can find a part number, get them to install in your Pantera, and then let the rest of us know about it, you will be the first who has managed to do so.
I do agree, the tightwad De Tomaso, who sourced all sorts of other items from everywhere, certainly did not tool up for new ball joints ....but what they came off of is not known.
Good luck.
Larry
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.