Just look at the target audience that is currently buying the majority of Tundras today (yuppies). There is your answer why you'll not likely see a HD Tundra or a manual transmission for the V8. Matter of fact it seems as though Toyota is making manual transmissions a thing of the past, as they are getting harder and harder to find in thier newer vehicles. They must have some research that shows everyone wants an auto tranny. Sad.