Josh O.,
Thanks for noticing the 12hp stickers. I did a lot of research on this during my restoration. I could be wrong, but this series of tractors was the first of the "wideframes" and IH no longer put the hp sticker on the gas tanks.
I have the book: Original Farmall Cub and Cub Cadet by Kenneth Updike, and there are no photos or info showing the sticker on the tank. I also have a copy of the Cub Cadet parts, service, and operator's manuals, and none of these list,show, or give any indication of a "hp" sticker on the tank.
My 128 had around 90% of the original paint still on it, and there was no indication of a sticker on it. There were two stickers on the motor: one on the side of the blower housing listing the serial and model numbers. There was one sticker at the top of the blower housing just above the word Kohler that said 12HP. There was some more writing on that sticker, but it was not legible.
As for the stickers, if I put one where the other one was, nobody could see it. That is why I decided to put one on each side of the motor.
This series of tractor is also the first to use a black alternator/generator.
I know the stickers are not quite "original", but neither is the exhaust stack with the rain cap or the ag and tri-rib tires. I know it would be almost impossible to be totally original,but the minute modifications sure do look good!
Thanks again for the comments,