Well take a peek at what I just found;
Carbs Unlimited sell a complete 4x48 IDF kit for the 351C at $3295.
http://www.carburetion.com/weber/wildv8.asp
There you go George...no excuse now
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.