When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Thought it was a GT2 with the air scoop. Maybe for the 991 model they are the same
991 RSR, notice the air intake on the side. GT3RS is used to homologize the race car. Which is why the 997 GT3RS 4.0 was made...so they can continue using the Mezger engine in Motorsport's applications.