The reason I would be getting the car is so I can do a full resto with an engine swap etc. So what ever I get, it will eventually be stripped down and rebuilt.
I have two trains of thought at the moment. There is a 260z shell that is up for sale that has had majority of the rust cut out, I can buy that - then when I get a chance, buy another rust bucket to transfer all the suspension parts, interior etc across and slowly build it up from there or....buy something like the 2.5k one, get it running and then slowly work on repairing the rust etc while still enjoying the car.