R6 440 block?

Hes coming up with the r6 because most 440s had this cast on the front of block in front of number one cylinder.
^^^^ What he said, both of my mid-70s 440 have this on them, nothing special. If it was a R6P8 motor it would have been the most current Nascar engine that the Dodge's ran before they pulled out, now if it was that it would be special lol