Here are a couple of alternatives:
http://www.ramliftpro.com/
http://www.kw-suspension.com/us/kw_hls.php
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.