340 What's it worth?

I was going to type something intelligent , and then I looked at Rusty's new avatar.
For the first time in my life , I am now jealous of Herman Munster. LOL

Where is AOK ?
I know most of the guys who are good with MoPars in Mn. , but am not familiar with them.........yet.
If you had a piston to valve issue and only spanked one , I think that is a little odd.
Cam specs ?
Which pistons and how does #7 look now ? ( The cylinder )
If the bottom end is still sound , then why not slap new heads on it ?
As far as value , that is a tough call. You need to find the right person to get maximum coin and the details so far aren't going to drive the price up.

I gotta add ......... this sounds like a dropped valve more than putting a valve into the piston during run......either from not enough clearance or floating them.