Denis, would love to see pics of your oil pan...Here are pics of the skid plate on '1046, I've seen enough of these (including in the middle of the bare spine chassis of a car in Belgium) to believe that these were made by Detomaso directly...shame on me for not taking measurements or even templates when the car was in my garage...
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.