DeMopuar, I assume your aluminum a-arms mount to the chassis with threaded mounts like the one in the photo. If you replace those rubber bushing style mounts with teflon lined rod ends, you'll be able to move the entire upper control arm rearward, between the mounting tabs, to increase your caster. Since a rod end is significantly thinner than a bushing style mount, you'll need to use spacers to make up the distance between the mounting tabs. You increase your caster by using a longer spacer in front of the rod end than behind it.
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.