We were able to find some of the new original style transmission tags that GM had available many years ago, and they've been discontinued for some time. The letter codes we have available are all we were able to obtain. We cannot special order any others. Once these are gone, that's all. These tags are not stamped. Has the original plastic coating on them, which after you stamp them, you will need to remove the plastic. Included is the rivet (pictured) that attaches these tags. Once we sell out of these tags, we will not be able to get others, as we bought the remainder of the stock the factory had. This tag, code CR fits 1970 CHEVELLE SS 396 375 HP NOVA CAMARO ALSO Z28 350 LT1..models.