I walked away from one of those a couple of years ago. It needed some head work, and I could have done it easily at the time.
I made what I thought was a fair offer. The owner wouldn't come off of it. Said he could get more as scrap. I laughed and said good luck.
Two days later he was calling me, wanting to take my offer. I declined due to his attitude before.
I wish I hadn't been so damn stubborn and bought the damn thing. It would have been a neat car now.