Steve, maybe its a trick of the light in the photo, but that one unsupported aeroquip brake hose looks AWFULLY close to the inner (?) right side u-joint! I certainly would tie-wrap or otherwise reangle the hose back against the frame rail or something.... You had a fitting erode away like this years ago, I think.
The 'mystery' bracket at the PCNC meeting may be a csble support from a GT-5 or GT5-S Pantera with the big 3-piston rear calipers & e-brakes very similar in design to your 'Goose except much larger. Take a look at Brian Bernard's '87 when you get a chance.
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.