450-500HP 360?

The best indication of horsepower is through the MPH #'s, not HP #'s. Traction will affect ET too much. What the engine goes in is also a big factor when it comes to impressing the ones not not familiar with the variables since there will be a big difference between 500HP in a 2,500 lb vehicle and a 3,500 lb vehicle.
You got THAT right! 400 rear wheel hp, but under 2500lbs with me in it. 6.30s/9.90s