R 64 Dart GT

Cal
I think you will get your price if you are VERY< VERY< patient. Like has been said Its a pretty car. You have brought up 2 key points Top and engine i think to get top dollar you will need be able to demo the top and at least have a date correct engine. Maybe a numbers matching??? I know thats not doable but just my 02. Im a 66Cuda nut and have 3 numbers matching /6 cars.
Hope this helps.
Frank