70 340 duster worth picking up?

Well its one of the more valuable Dusters out there. Pick it up if its not too rotted. You'll probably have to get another parts car to build it. Buying everything piece by piece will cost a lot of money. The good news is when you're done you'll have a nice $10k car. Just depends on how much it costs to get there.
10k, is this a misprint? I can see it costing ALOT more than 10k in parts alone! If this is one of the more valuable dusters, what is considered the rarest? The biggest engine they came with was the 340.
Let's see some pictures when you can. Was a nice car originally and it being a 340 stick car makes it even better. Look for the vin tag and fender tag if it's still there. Those will tell what it was from the factory.
Im not sure if it was a 3 or 4 speed car. Like you said, the tag will tell us what it is.