That 'factory spec' was for stock 185-70x 15 belted-bias tires and stock rubber a-arm bushings. If you're running anything else, toe should be 1/16 front & back, total for 2 wheels, as measured at the tire tread surface. Wider tires need less self-aligning from the toe adjustment, and the tread wear will be less as will horsepower losses.
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.