This is a set of 1971 casting 350 heads, date code on both is 112. I got these in a parts collection and don't have the history on them but can see one head has had smoothing done to it. The casting bumps have been ground off in the combustion chambers, the intake ports and some work done on the exhaust ports. The second head would still need this work done to it. I have had them hot tanked and magnifluxed to assure there are no cracks and they both checked out fine. Price would be $180 plus shipping from Medford Oregon. Send me your zip code or postal code if you'd like a shipping estimate. I've taken pictures for potential buyers to evaluate their condition. Let me know if there's any specific areas you'd like to see that may not be clear.