So it is a bumper to bumper warranty that would start at the date of my purchase, not the original purchase date, through National Auto Care. It would extend 4 years beyond the end of the current 3 year/36k mile one and 2 years beyond the current power train one.
I stopped by the Nissan dealer and discussed it and maintenance in general. In their view, while repairs are expensive, if the vehicle is properly maintained, major drivetrain components will be reliable; and while other facets of the vehicle could have issues this would be a very rare occurance on a MY 2015.
As I am annoyingly OCD with this vehicle I am going to see what the read out is from the local GTR tech during the POS/Oil change I scheduled for tomorrow and, if it is in line with what one said during the PPI I will likely forego the extended warranty.
I discussed it with the finance lady there and she said that they don't offer extended warranties period on new (or used) GTRs. That supposedly varies with who is backing the Warranty.
Also was quoted $1,159.00 for a full transmission service which is much less than I have seen discussed.