I think this should be a separate model, like the P1 LM is on this site, since it isn't a production car, rather a modified/tuned car. Now you have it listed as a "stock" GT2 RS.
Porsche 911 GT2 RS laptime at Nürburgring Nordschleife
2017 Porsche 911 GT2 RS completed a lap of Nürburgring Nordschleife in 6 minutes and 40.33 seconds.
|Vehicle||Modified Porsche 911 GT2 RS (991)|
|Modifications||Manthey Racing package|
|Estimated time||6:56 (+15.7 sec)|
|Average speed||185 kph (115 mph)|
|Submitted||02.11.2018 by FastestLaps|
|Reference||Volkswagen AG - Porsche 911 GT2 RS Manthey Racing record run|