The Silverado SS has not taken the sport truck world by storm. It was heavy, only available in AWD, expensive and lacked the horsepower to take on the Ram SRT-10. Chevy took care of three of these concerns with the new SS. It will only be available as rear-wheel drive, it sheds 258 pounds and the price drops $3,000 to $35,590. Engine power stays the same. PickupTruck.com also shares info on possible new more powerful engine choices for 2006 and a six-speed Allison transmission that will be available in 2006 2500/3500 HD trucks.