Perfromance version of the Triton V10?

Why not take the "Triton V10" and make a performance version of it? That's basically what Chrysler/Dodge did with the Viper. They took a "truck engine, cast it in aluminum and Viola, Viper .I know Ford is now on it's "eco-boost" campaign, which I like. But just like Ford came out with the GT, why not do the same, but this time with a performance version of the V10?