Bill: I would add that all the blank 14x6.0's are all made by Kelsey Hayes and are stamped in a small type of font. The 327 wheels(I have several) are made by some other wheel company and have a much larger font to the numbers stamped on either side of the valve stem. I think(I will have to check tonight) that the Kelsey Hayes wheels have a 6.0 stamped to the right of the valve stem after the day code stamping. The 327 rims have no 6.0 but have a pentastar stamped instead. Other than that the rims are identical. Also, I would state this, that the 327 rim was avaiable as far back as Aug of 1969(I have one) and at that time, like all other wheels, had NO PART NUMBER stamped above the valve stem. Because of this, I would say that this rim was obviously NOT a 71 B Body rim only. It was used for 70 production cars as well. Bill, can you comment on the 2944 242 spare tire 6.0 rim?