The RS variant of the GT3 is a Porsche that's more at home on the track than on the street. With features such as an adjustable spoiler, lightened flywheel, weight reduction, tunable suspension, and widen track, the 415 horsepower RS accelerates from 0 to 60 in just 4 seconds. With a top speed of 193 miles per hour, its one of the fastest naturally-aspirated 911's to date.