1973 Duster 340 Clone, Whats it Worth

Hello all,
I need you opinions quick before I pull the trigger. In your opinion what is this car worth. Details: 1973 Duster with 340 (from a 71 donor)(clone), 4bbl, 727 Auto, 8 ¾ (don’t know the gear), Pwr Steering, front disk brakes, Original interior with some seems giving way on the front bucket seats. That’s all the info I have so please provide the best feedback you can based off that, thanks.
Duster_71