Absent the GT-R owner verifying mods, there's another way to find out.
Joe will be at the Shift-S3ctor event, and there are plenty of GT-R's signed up, including a few 2013's....some stock and some modded.
Newly acquired: 2015 991 Turbo S
Daily: 2013 e92 M3 DCT / ESS VT2 650 S/C / Akrapovic Evolution / StopTech BBK
Track/Airstrip: 2011 997.2 Turbo S PDK / GIAC FBO / GMG suspension build
Beaterz: 2013 X5 3.5 Sport, 2015 Wrangler Unlimited
YouTube Channel: https://www.youtube.com/channel/UCT1...eoFBszPIK0gf9w