2025 Mustang GTD | 815 HP 
As good as the groundbreaking Mustang GTD is, we’re somewhat ambivalent about including it in any list of V-8 muscle cars, though it does fit our admittedly looser criteria. With an approximate base price of around $300,000, the cost of entry for the 815-hp supercar would give anyone pause, but the fact that you must be invited by Ford to buy one means that even if you win the Powerball lottery, well, you still may be out of luck. Still, the GTD is at heart one of the most powerful muscle cars, even if only in shape and name. Its supercharged 5.2-liter Predator V-8, eight-speed dual-clutch automatic transaxle

Base price: around $300,000 
Power output: 815 hp