70-71 Duster??

I would just like some peoples opinoins on what you think this car is worth, I have an opportunity to look at what seems to be a pretty solid 70 or 71 Duster. It's a forest green (orig. faded paint) 318ci 904 trans with an 8/34 rear, dual exhaust and Big Bolt Ralley rims. The interior is black and in fair condition only a rip in the front becnh seat.

I believe between $2,500 and $3,500 is a fair offer whats your opinoins?

Thanx for any feedback! Sorry no pics.