70 dart 4-speed 340

Welcome and your instinct is correct.

I saw that ad last week and was talking to my neighbour about it who is also a Mopar nut. We both agreed that if that was a /6 or a 318 it would be a parts car. That needs a lot of work. Unless you own a body shop and put little to no value on your time, you will for sure be upside down in the restoration cost vs what you could sell it for once restored (assuming no shortcuts are taken).

The way the ad is written, it sounds like he bought it cheap, knows (and admits) it needs a lot of work and is trying to flip it for a healthy profit. Nothing about the history of it which is consistent for a flip. Also, his idea of super rare is different from many others. They made almost 4,500 ‘70 340 4spd Swingers. Hard to tell if it has a fender tag or not? Best to find another project at a lower price.