Baby Grand racecars are a great way to get involved in racing, and they are among the safest racecars ever built. Baby Grand stockcars are 2/3 scale replicas of Nextel Cup Stock Cars. They use a Yamaha XJR1300 engine which produces 120-125 hp. Each car's weight of approx. 1250 lbs., means an exciting 10:1 power to weight ratio.