It's really a shame to see a vette trashed like that as any collector car being trashed is sad. 75 Vetts dont bring the higher prices but a 75 convertable is a little more desireable as it was the last year of the convertables for several years. Fixing it up will cost alot and you won't get your money back but just restoring something like that would be great. I really hate seeing old cars sitting around trashed when someone like you can help it get back looking good and on the road again. I say try and save it.