The Tata Nano ships from the factory with a 624 cc two-cylinder engine making around 37 horsepower. To make the Super Nano, JA Motorsport removed that engine and replaced it with a 1.3 L four-cylinder that makes 230 horsepower. The quoted power-to-weight ratio is 2.6 kg/hp (5.7 lb/hp), which means the car weighs close to the factory spec of 600 kg (1,322 lb). The engine is connected to a six-speed sequential transmission controlled by paddle shifters. JA Motorsport claims the car has a top speed of 180 – 200 kph (111 – 124 mph) and 0-100 kph (0-62 mph) in under six seconds. If you are interested in your own Super Nano, JA Motorsports will build you one for around $39,500 (2,500,000.00 INR). That might be hard to swallow considering the current Nano costs around $2,400 (150,000 INR) but in return you are getting a small race car with just about every component upgraded.
Source: JA Motorsport and Indian Autos Blog via Jalopnik