1970 Factory FM3 Duster

sounds like what you have ( I assume you own it), is a good project car. this is my take. a 70 duster is worth more than the rest . a 318 is worth more than a slant, but not as much as an original 340. I would peg its value around here at maybe $ 2000- 3000 PLUS whatever can be attributed to its rare color. assuming pretty straight body, not much rust , everything there and running driving good. but also remember rare does not always equal value. I personally would not give more for a pink car. just me.
its its a keeper, realize you will probably spend more on it than it might ever sell for if you decided to let it go. UNLESS you can do all its work. the key is to have a car YOU love and don't worry about what its worth or what other people think.

I agree with you 100%.
What a perfect response!