I just wanted to share this with everyone and CRG, I just dismounted 2 tires off my 67Z and one wheel is a service replacement wheel with DF code K19 5. here is some pics.
The part number sticker
![](http://i96.photobucket.com/albums/l188/Budbrewer1/P6070006.jpg)
The DF code and date
![](http://i96.photobucket.com/albums/l188/Budbrewer1/P6070007.jpg)
and the smaller size slot 1.00 inches
![](http://i96.photobucket.com/albums/l188/Budbrewer1/P6070009.jpg)