René I know this may sound like a lot of work, but why not replace the calipers temporarily with female bungs? This way you can eliminate the calipers...the bungs would need vents to bleed the system - a block of aluminium at each corner with opposing holes and the right threads...
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.