k member question

So i finally pulled my duster out of the corner its been sitting in for 10+years and realized i need a k member (i really should look at stuff better, but hey ifs free). Its a 1974 that was originally a v8 4spd car. What k members will fit pther than the obvious 74 duster k member? And what would be a good price to pay for one? Where the car was sitting (my uncles friends house) is like mopar heavan and im sure one of the 25+ cars out there will fit. And i know he has a duster but i think its a 71-72 and not sure if it would work.

Thanks for any help,
Mat