I can check for you this weekend. If I remember correctly, the slave used a 12mm x 1.0 Banjo bolt on one end of the hose, and a British bubble flare on the other end.
It is easiest to just convert to American flares on the end of all of the hard lines, using a flare tool. Then the hoses and adapters are easier to find.
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.