* GT: Around 300 horsepower.
* Other trims (e.g., V6 or base models): These would *not* have a 4.6L V8 and would have significantly less horsepower.
Therefore, you need to specify the exact trim level (GT, Premium, etc.) to get a precise horsepower figure. But for a 2006 Mustang GT with the 4.6L V8, 300 hp is a good estimate.