What is a nicely running Stock 440 worth?

I am having a 505 built for my 69 Fury III to replace the present 440 {Not Original! At birth she was a 383!} The present 440 engine is stock with iron heads and intake and I assume it is a stock cam as it has good vacuum and runs nicely. Should I do a video of it running before it is pulled? Or compression test on video? Just wondering what the market is. Don't want to make a killing at all ,just a fair price. I also have the crank and rods of another 440 [core for my build] that is in...

What is a nicely running Stock 440 worth?
Author: Turboomni