unknown mileage would make it what we call a "box C" car which is a significant hit on value, also, is it salvage title? Heck, is it titled? That does not help either. Parts would most likely need to be shipped from Europe, cheapest to get them from Germany rather than the UK; have a contact?
Can you do the work yourself? Otherwise, you could easily go broke fixing it. I do all my own work on such things, but where you gonna go for the work is a big question. Not running, I always assume a motor exchange is necessary. I occasionally get lucky on an auction car that does not run, but usually not. Where can you get the motor for it? Nobody rebuilds anymore. Just looking at what I see here, you had better weigh all the possible costs, because looking at the way this car is set up now, I would suspect every part of it....looks like an abused one to me. Could be a nightmare.
You could easily spend thousands on cosmetics too, but you could sell the wheels seperately to defray some of the cost. I would not think that those wheels would help your resale value. Amazing, but fancy wheels like that may make it harder to sell. I always try and have more conservative wheels on it as you don't want your future buyer to think it was owned by a 17 year old ghetto kid who drag raced against Metros every weekend.
Actually, I thought it was a Buick when I first saw the portholes.....LOL