Parts development has been a crucial part of this project, and Evolution dropped 20 pounds of rotating mass with this 4-inch aluminum driveshaft in lieu of the stock two-piece, which they say is a bit lighter than the '10 two-piece driveshaft. The company will have lighter 3.5-inch shafts available by the time you read this, and it reports every iteration (V-8, V-6, stick, and auto) all require a unique driveshaft. Likewise the '11 exhaust is unique as well. After the cats, it shrinks down from 2.75 inches to 2.25 inches into the new resonators, and reverts to 2.75 inches back to the large stock mufflers. Headers and exhaust should be available now, too.