Mid 12's with a 318 head 360?

Pure stock 440 Barracuda only runs 13.51:

I would be very surprised if yours actually ran 8.2's with a stock trim 340.

I was surprised too. I beat all kinds of big block cars street racing back then. One of the few times I lost was to a well prepped 340 Duster. But I tell you it was 8.23