Or you can go with the Vader window regulator. Pricey but looks like a very nice unit.
Here's the write up from their website.
VADER WINDOW REGULATOR ADVANTAGES
"The Vader Window Regulator installs WITH THE SAME MOUNTING LOCATIONS AND HARDWARE, WITH NO MODIFICATIONS OR HOLES TO DRILL IN YOUR DOOR. THE HARDEST PART OF INSTALLATION IS REMOVING THE OLD ASSEMBLY.
It solves all the problems listed, and more. Raises and lowers the window completely in about 2 seconds. Weighs ½ the original regulator and motor assembly. Uses modern cable technology which opens up extra space for speakers, etc.
NOTE: Although the Vader Regulators have more power than the stock units, they are intended to replace properly working (although slow) stock Pantera window regulators and they may not be able to overcome other problems such as out of alignment door frames or window tracks, improper (too tight) window weather-stripping, or faulty wiring."
VADER
Jeff
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.