I have this drawing, maybe it can help.
looks like the top A arm center is the same elevation as top of the ZF
Note the "shifter box" is above the top of the casing
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.