Driver airbag is standard. The 2.8-liter V6 is replaced by a 3.1-liter motor making 140 horsepower. The 5.7-liter V8 is redesigned with lighter-weight pistons. IROC models get a limited-slip differential, and IROC convertibles have new 16-inch alloy wheels. Delco/Bose sound system is upgraded. Buyers can order a Flame Red interior, though we don't know why they would.