[Tom Wells]

Here's a bit of info about top fuel from Kenny Bernstein's web site:

Engine

Supercharged 500 cubic inch TFX aluminum hemi V-8 block

Bore & Stroke
4.19 x 4.50 inches

Horsepower
7,000 to 8,000

Acceleration
Zero to 100 miles per hour in .8 seconds
Zero to 275 miles per hour in 3 seconds
Zero to 330 miles per hour in 4.5 seconds

I understand they can go 0-60 in one car length...

Here's the pro stock mountain motor info from Jon Kaase's site:

815 Cubic Inch Pro Stock Ford HEMI Engine
1700+ horsepower

Since the deck height is much greater than the production block based engines, you could probably fit one of these in a Cobra if you moved the hood upward by about a foot...