Jacob Link

Hi all. Mods please remove if this isn't the right place for this thread.
I searched around and haven't found any recent posts in regards to these heads. I was wondering what the fair market value may be on these heads. I have no issue keeping them for myself but I thought that there may be a few "purists" out there who would want these more than me. They are date coded A 5 6 and A 15 6. I would keep the valve train and the heads are still on the motor. This motor was pulled last weekend out of a friend's car (to make room for a 572) and is in perfect running condition. I bought the motor to put in my Chevelle. Thanks in advance. Jake