1970 replacement 440 6pak value

70-71 440 4bbl and 440 six packs have the same block.

What is the stamping on the upper pad look like? Is there an F or G on it and is there an HP on it? Is it blank or have some markings.

What is the casting date on the block? Does it have the special thick 70-71 440HP balencer?

IF it's a true replacement block with no numbers it's worth some money. The 906 heads aren't worth a lot nowdays, but still have value.

Need to really look at the VIN pad and see if it was originally blank or it someone put it on a mill and wacked off original numbers.