We're not saying you don't. But Joe has no reason to lie and he knows how to get the most power out of everything. This isn't an ordinary tune as far as I know because Joe has hookups at Ford. Besides the Mustang GT uses the same exact engine except a different intake manifold I believe, and it starts at 420HP, it's just the tuning that makes it different, not to mention you can tune it on top of that. 460 isn't impossible and I don't think you know fully of the capabilities of the 5.0 yet. Ford came out with a power monster with it. You won't be disappointed.