Thanks, guys, at least I've found the name for these is "shoulder bushings," there are some common sizes used for shocks (available from Pegasus racing, for example)...I guess its time to find a machinist
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.