It's without a doubt one of the best horsepower bangs for your buck on the market today. In fact, the Ford Mustang has always been a bargain since it first premiered in mid-1964. But say if today's stock Mustang GT doesn't quite do it for you? Sure it's got a wonderful V8, but you just gotta have more. Fortunately there are options, and two of them are the Shelby GT500 and the Roush Stage 3, producing 662 and 675 horsepower respectively.

Compared to any supercar with similar output from Italy, it'll cost you well north of $100k. You can't go wrong with either of these Mustangs, but as a speed nut, you still want to know which of the two is the fastest at the drag strip. This new video provides the answers you're looking for.