Here is my opinion.
It's a niche group that will come across this car and buy it. Small in numbers, most will have very little clue on what to look for in respect to future problems.
Pics of the work done and a paper trail is beneficial, now about the price, it will be a waiting game and I would not drop the price in print but be willing to negotiate.
It also depends on where you spend your add dollars.
Put it in Auto Trader digital online. It takes a while for a fox . Most people dont have ten grand. They need a bank loan for ten grand. I think for an older car, a guy will plan for it. Maybe some inheritance money , or a windfall of some sort.
Just checked on e bay $16,000 to $17,000. Ill take that for garage rental Your sweet fox sells great in New England as a Texas car.Thats because its older. Hopefully in ten years foxes will be all that. Everybody wants a 70 Dart. Even if the battery is dead every morning because the charging system stinks. The advertising has to be at least regional . At this time in the lives of the foxes there either pretty nice , or they were behind a building for ten years uncovered. Im hopeing my day will come cause I plan on this thing taking up garage space for 6 -10 more years. I cant afford a good 70 s car. A good idea of the fox future would be a Mustang Grande 72.
I think I've got a decent feel for the market, but localities will vary. I sold a hatch with a simple GT40 combo and a T5 for $6,500 2 years ago. I think your car is worth more than that, but as mentioned, it's a smaller crowd. So, expect offers to be less common.
My best guess is it'll go around $7,500, assuming it drives right, everything works, & you have the documentation to clearly prove that it's a 347. While I have no personal doubt, I don't take anyone on the open market at their word.
Also put 95 booster n master cylinder in there noticed 5 lug swap guessing rear disk too car is sketch without swapping those but cant tell to well if u have or hadnt from pics