If it is in bad shape it is probably worth more as a part out than a restoration candidate. Got any pictures?
I will take some pictures. The front has some rot, It would come with 4 good doors. What are the money parts on such a vehicle?
As far as the exterior goes, the body kit (ground skirts) are worth a fair bit to someone building a clone. The alloys are becoming hard to find, along with the turbo-hood. Of course, mechanical things such as "Shelby" valve covers and turbo parts are also valuable if in good usable condition. Given the GLHS's low production numbers, it's worth fixing if you can....because most of the parts are similar to other GLH cars, so the value is in the car itself, not that parts so much.