NAPA shows THM 297 for 195 deg. F. (OEM specified), THM 197 for 180 deg. F. (alternate).
They also have Balkamp / Mr. Gasket part numbers listed.
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.