This Sale is for a pair of 1972 340 J Heads. I removed these from a running 1972 Challenger a few years ago.
As far as I can tell they are stock with the original 1.88/1.60 valves. I sold the car I was saving these for.
I removed one valve spring for repairs on another car so it will need to be replaced.
I have a lot of parts available. Just let me know what you need.