need help to fig out value of a 1972 duster

I don't know a whole lot about these things, but an eight hour round trip to see a car that might be an original 340, when the seller doesn't have the forethought to find out for sure, seems like too much of a risk. With the current cost of gas, eight hours is a good bit of money in addition to time.

sure is...i gave up on it...still looking....ky and ohio areas dont have much too pick from unless u wanna pay big bucks...around here i see ppl asking 17k for a 340 duster clone...and i dont see many mopars under 10k even thee ones in fields still that are rusted out...its gettin crazy with the prices