No. Stock downpipes with the OEM cats.
That's great because cost-effective options to tone things down are available when working with stock downpipes. Not many options available with catless downpipes.
In addition to the options already presented in the previous posts, here is another:
A member on the other forum added a Borla XR1 muffler to his Cobb catted midpipe to help address the drone. The Borla XR1 is used on the "resonated" version of the AMS midpipe and can be had for < $175. A local exhaust fabricator can help with the installation. Hopefully you're comfortable with the mod because it involves cutting the current midpipe and rewelding the XR1 muffler in place of the straight piped section. It should be a piece of cake for an experienced fabricator.
My personal experience with that modification -- I did the same modification on a AMS non-resonated midpipe prior to a long road trip in Nov. Previous to the addition, the SO pretty much said we were not taking the car on anymore road trips. The drone gave her a headache and was not conducive to comfortable road trips even after adding sound deadening throughout the cabin. The XR1 addressed the comfort issues and the exhaust note was much more refined on the outside while the cabin was nice and quiet. We took the car on a 3k mile interstate road trip shortly thereafter with zero complaints about drone. The only complaint was that it did not help much once catless downpipes were installed.
If I were to start over with a stock GTR, the first mod would be the AMS resonated midpipe or any midpipe with the addition of the Borla XR1 muffler. I felt that was the perfect balance of refined exhaust note and comfort.
2015 Nissan GT-R Premium
AMS Alpha 9+ Turbochargers | AMS Alpha Induction Kit | AMS Alpha Front Mount Intercooler
AMS Alpha 3" Intakes | AMS Alpha 90mm Downpipes | Litchfield 102mm Triple Silenced Exhaust
AMS 4.0 BAR Map Sensor | AMS Alpha Coolant Expansion Tank | AMS Alpha Splash Shield
Speed Density on Cobb AP3 | ID1300 Injectors | Tial Q BOV | DW300C Fuel Pumps | GotBoost Flexfuel Kit | GotBoost Fuel Pressure Monitoring Kit