Shite! Exactly what parts of that 'car' (I use the term loosely) were you planning on using???
If you were prepared to take on that heap of rust, here's another idea for you: why not buy a coupe and do a fastback conversion on it? You're obviously not too fussed about the provenance of the car and the donor car would be way cheaper (<$10K) with plenty both here and stateside to choose from.
Yes I had already thought of that as there is an S code coupe project for sale in NSW now.
However The fastback conversion kits I've seen are about 4K USD, leaving me only $2,600 USD (based on the highest bid for that pile of pooh so far), to find a "good" coupe to base it on. So that idea is a non starter really.
That one is a pile indeed, and as such I may not end up buying it, but I in case I do I also look at it another way;
1. I'm a fussy restorer and tend to replace anything dodgy, so a half decent car for say $15K vs. a dung pile for $7K makes no difference to me. I'll be replacing any imperfect panels regardless. In fact I'm probably better off as I'll be building something largely new, that is a known quantity vs. buying something that looks OK but maybe full of bondo. (I've been caught that way before). All my vintage restos get sandblasted and rotisseried, so I find and fix anything bodywise.
2. Whilst I am building a non concourse car (fun car / movie car), I would prefer it was an original fastback, V8, manual. That red one is all of the above. I'll keep the 289 and manual box, and other OEM parts I upgrade, cleaned, preserved and bagged, so it can be put back to OEM later if desired. That preserves the value etc.
3. The parts cost of new panels I've estimated at around $4-5K USD plus shipping (ex Mustang Depot, still looking for other supplier options), and I do my own basic body work, so cost wise theres not much difference over buying a better body.
4. Its available, and fastbacks (especially like I want with a V8 / Manual) aren't easy to find.
So yes I agree its a pile, but I've learnt over a few projects to look beyond that. Time will tell! 4 days to go.