Half the pictures the pictures in that thread require no explanation, but they aren't helpful when it counts.
My best guess was
Victress La Dawri, but no:
Restored Victress C3 / LaDawri Castilian From Michigan - Where Are You??? - forgottenfiberglass.com
Any idea what your post shows? Also this (unannotated) one:
http://forums.pelicanparts.com/off-topic-discussions/886496-show-me-your-rear-end-38.html#post9719764
My guess is Maserati. It has a birdcage/bread van vibe to it.