Well, since I brought up the subject I will give my opinion.
Yes, it would be a cool car. It was part of the Rapid Transit System for Plymouth which was the sister organization of Dodges Scat Pack which the factory designated as "their" idea of a factory built hipo cars. Dodge did not have a "C" body designated in their Scat Pack so the 440-6 Sport Fury is a stand alone car.
The #1 condition in the guide I use for a 1970 Sport Fury, 2 door hardtop, with a 318 is $12050. There is no add for a 440-6 due to the limited numbers to assign a value. There is a 20% add for a 440/375. So lets say the 440-6 is worth a 75% add. Then lets give it another 25% for the Black color. Then lets give it another 25% for it's rarity. This adds up to $27675. for a #1 condition car if my math is right.
I think I have been very generous here and I NEVER add a dollar value for a color as it is personal choice, but of course so are the particular cars we like as individuals.
Your could not buy the parts and restore this car for DOUBLE this amount EXCLUDING your purchase price. Is it worth it? To the right guy that like the big "sea bodies" (C bodies) it would have to be considered Plymouths top dog for a performance model and may take this car to task. It would have to be considered a labor of love with no thoughts of making any money on or even getting your investment back upon resale if kept in #1 condition unless the market exploded sometime again. But who knows, there certainly should be a buyer out there for it but I don't THINK anyone is going to step up to the car for anywhere near the asking price which must certainly be a fishing expedition.