Question: what is the difference between gt2 and gt3 racing?
Answer: What is different between the GT3RS and the GT2RS? The GT3 RS is built off of on the naturally aspirated 4.0 litre flat-six engine on the GT3. The GT2 RS is built off of the 3.8 liter flat-six twin-turbo engine of the 911 Turbo S. ... The GT2 RS is about 300lbs lighter than the Turbo S since it is not all-wheel drive.