I read an article in Truck Trend not too long ago, and it was a Q and A with the head honcho of GM's truck development. One of the questions asked to him was what's their answer to the Ford 3.5 Ecoboost going to be, if any. He said in the article that their up coming V8's already have V6 fuel economy with strong V8 power, and that there was no plans for a turbo V6. But who really knows.