Magnum, here's some info that might be of interest.
From some digging I did a while back, it seems that Excalibur produced around 100 finished cars and kits between 1993 and 1997. The finished cars were compliant with U.S. safety and emissions standards of the day, which is almost unheard of in the world of Cobra replicas.
I think most factory-made cars were powered by 302s, so either this one had a heart transplant or was a kit.
And here are some links to the brochure for the
1994 Excalibur Cobra, to a
different brochure for the 1994 Excalibur Cobra, and for an
Excalibur Cobra advertisement.
Hope these links are useful.