Thinking a "stock" mustang makes 3000HP is very delusional. Maybe it's because you don't know what a stock mustang is?
Here's a small block ford (super street oulaw car) pegging the dyno with a single turbo. Dyno pegged at 2000HP.
Just so you can see a video and just so you know. This is not a "stock" mustang. Hope this helps.
Edit: Since you'll probably fail to the make the connection. My car is a super street outlaw car with 2 turbos. It's not a stock mustang. Again just trying to help you out.