If you're into some torque and insist that it's a new car, order up a 4.7+5 speed Dakota. Not as fast as the Mustangs or F bodies, but a tad bit faster than alot of the rice in the quarter. (ie: Acura RSX) Upto about 1/8th mile they can keep close to Mustangs but the game changes from a torque game to power after that. (I held about 2-3 car lengths until the 1/8th when I was lined up against a Cobra when it started to pull away). The reason I went for mine instead of a Firebird was the costs for my area made the 'bird $5k over budget and the insurance would KILL me, the Dakota is classified as a compact truck.
If you don't mind used, you can't beat the muscle cars.