1970 duster clone. need opinions.

hey guys im looking at trading my mustang for a 1970 340 4 speed duter clone. the car is basically rust free. the only rust spot i found was next to the windshield trim and its not much just a nickel sized spot. anyways here are some pictures of the car and i will include a link to my car at the end of the post.











and here is my car. its a basic heads, cam, intake EFI fox coupe has a bunch of go fast goodies. pretty fast and well taken care of. just want to see if i am gettig a good trade here. and if someone can put a monatary value on the duster for me please do so.

http://s538.photobucket.com/albums/ff345/bcauley9844/