The wheel from an early Capri should fit (not sure about the Escort splines, however), but just about anything is an improvement over the stock unit. LeCarra makes a very nice period-looking wheel.
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.