The manuals can be purchased from Pantera International. I would recommend a complete set of manuals; owners, parts, service, ZF and TSBs. I have a page on the website that explains each book.
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.